Make more extensive use of our own DSLs (#153 )

Update changelog (#152 )
Finish DU parsing (#151 )
2025-10-25 13:58:40 +00:00 · 2024-05-31 16:54:05 +00:00 · 2024-05-30 22:37:05 +01:00 · 2024-05-30 22:27:15 +01:00 · 2024-05-30 20:34:53 +01:00 · 2024-05-30 14:28:56 +01:00
72 changed files with 4800 additions and 2948 deletions
--- a/.config/dotnet-tools.json
+++ b/.config/dotnet-tools.json
@@ -3,16 +3,16 @@
  "isRoot": true,
  "tools": {
    "fantomas": {
-      "version": "6.3.0-alpha-007",
+      "version": "6.3.4",
      "commands": [
        "fantomas"
      ]
    },
    "fsharp-analyzers": {
-      "version": "0.24.0",
+      "version": "0.26.0",
      "commands": [
        "fsharp-analyzers"
      ]
    }
  }
-}
+}
--- a/.editorconfig
+++ b/.editorconfig
@@ -2,7 +2,6 @@ root=true

 [*]
 charset=utf-8
-end_of_line=crlf
 trim_trailing_whitespace=true
 insert_final_newline=true
 indent_style=space
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,5 +1,5 @@
-* eol=auto
-*.sh text eol=lf
-*.yaml text
-*.nix text eol=lf
-hooks/pre-push text eol=lf
+* eol=auto
+*.sh text eol=lf
+*.yaml text
+*.nix text eol=lf
+hooks/pre-push text eol=lf
--- a/.github/workflows/dotnet.yaml
+++ b/.github/workflows/dotnet.yaml
@@ -1,3 +1,4 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/SchemaStore/schemastore/master/src/schemas/json/github-workflow.json
 name: .NET

 on:
@@ -28,7 +29,7 @@ jobs:
      with:
        fetch-depth: 0 # so that NerdBank.GitVersioning has access to history
    - name: Install Nix
-      uses: cachix/install-nix-action@v25
+      uses: cachix/install-nix-action@V27
      with:
        extra_nix_config: |
          access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -49,7 +50,7 @@ jobs:
        with:
          fetch-depth: 0 # so that NerdBank.GitVersioning has access to history
      - name: Install Nix
-        uses: cachix/install-nix-action@v25
+        uses: cachix/install-nix-action@V27
        with:
          extra_nix_config: |
            access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -58,7 +59,7 @@ jobs:
      - name: Build project
        run: nix develop --command dotnet build ./WoofWare.Myriad.Plugins/WoofWare.Myriad.Plugins.fsproj
      - name: Run analyzers
-        run: nix run .#fsharp-analyzers -- --project ./WoofWare.Myriad.Plugins/WoofWare.Myriad.Plugins.fsproj --analyzers-path ./.analyzerpackages/g-research.fsharp.analyzers/0.8.0/ --verbosity detailed --report ./analysis.sarif --treat-as-error GRA-STRING-001 GRA-STRING-002 GRA-STRING-003 GRA-UNIONCASE-001 GRA-INTERPOLATED-001 GRA-TYPE-ANNOTATE-001 GRA-VIRTUALCALL-001 GRA-IMMUTABLECOLLECTIONEQUALITY-001 GRA-JSONOPTS-001 GRA-LOGARGFUNCFULLAPP-001 GRA-DISPBEFOREASYNC-001 --exclude-analyzers PartialAppAnalyzer
+        run: nix run .#fsharp-analyzers -- --project ./WoofWare.Myriad.Plugins/WoofWare.Myriad.Plugins.fsproj --analyzers-path ./.analyzerpackages/g-research.fsharp.analyzers/*/ --verbosity detailed --report ./analysis.sarif --treat-as-error GRA-STRING-001 GRA-STRING-002 GRA-STRING-003 GRA-UNIONCASE-001 GRA-INTERPOLATED-001 GRA-TYPE-ANNOTATE-001 GRA-VIRTUALCALL-001 GRA-IMMUTABLECOLLECTIONEQUALITY-001 GRA-JSONOPTS-001 GRA-LOGARGFUNCFULLAPP-001 GRA-DISPBEFOREASYNC-001 --exclude-analyzers PartialAppAnalyzer

  build-nix:
    runs-on: ubuntu-latest
@@ -66,7 +67,7 @@ jobs:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Install Nix
-        uses: cachix/install-nix-action@v25
+        uses: cachix/install-nix-action@V27
        with:
          extra_nix_config: |
            access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -79,20 +80,41 @@ jobs:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Install Nix
-        uses: cachix/install-nix-action@v25
+        uses: cachix/install-nix-action@V27
        with:
          extra_nix_config: |
            access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
      - name: Run Fantomas
        run: nix run .#fantomas -- --check .

+  check-accurate-generations:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0 # so that NerdBank.GitVersioning has access to history
+      - name: Install Nix
+        uses: cachix/install-nix-action@V27
+        with:
+          extra_nix_config: |
+            access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
+      - name: Whitespace change
+        run: "echo ' ' >> ConsumePlugin/List.fs"
+      - name: Generate code
+        run: nix develop --command dotnet build
+      - name: Run Fantomas
+        run: nix run .#fantomas -- .
+      - name: Verify there is no diff
+        run: git diff --name-only --no-color --exit-code
+
  check-nix-format:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Install Nix
-        uses: cachix/install-nix-action@v25
+        uses: cachix/install-nix-action@V27
        with:
          extra_nix_config: |
            access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -105,7 +127,7 @@ jobs:
    steps:
      - uses: actions/checkout@master
      - name: Install Nix
-        uses: cachix/install-nix-action@v25
+        uses: cachix/install-nix-action@V27
        with:
          extra_nix_config: |
            access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -118,7 +140,7 @@ jobs:
    steps:
      - uses: actions/checkout@master
      - name: Install Nix
-        uses: cachix/install-nix-action@v25
+        uses: cachix/install-nix-action@V27
        with:
          extra_nix_config: |
            access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -132,7 +154,7 @@ jobs:
      with:
        fetch-depth: 0 # so that NerdBank.GitVersioning has access to history
    - name: Install Nix
-      uses: cachix/install-nix-action@v25
+      uses: cachix/install-nix-action@V27
      with:
        extra_nix_config: |
          access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -174,8 +196,27 @@ jobs:
        # Verify that there is exactly one nupkg in the artifact that would be NuGet published
        run: if [[ $(find packed-attribute -maxdepth 1 -name 'WoofWare.Myriad.Plugins.Attributes.*.nupkg' -printf c | wc -c) -ne "1" ]]; then exit 1; fi

+  github-release-plugin-dry-run:
+    needs: [nuget-pack]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Download NuGet artifact (plugin)
+        uses: actions/download-artifact@v4
+        with:
+          name: nuget-package-plugin
+      - name: Download NuGet artifact (attribute)
+        uses: actions/download-artifact@v4
+        with:
+          name: nuget-package-attribute
+      - name: Tag and release plugin
+        env:
+          DRY_RUN: 1
+          GITHUB_TOKEN: mock-token
+        run: sh .github/workflows/tag.sh
+
  all-required-checks-complete:
-    needs: [check-dotnet-format, check-nix-format, build, build-nix, linkcheck, flake-check, analyzers, nuget-pack, expected-pack]
+    needs: [check-dotnet-format, check-nix-format, check-accurate-generations, build, build-nix, linkcheck, flake-check, analyzers, nuget-pack, expected-pack, github-release-plugin-dry-run]
    runs-on: ubuntu-latest
    steps:
      - run: echo "All required checks complete."
@@ -188,7 +229,7 @@ jobs:
    steps:
      - uses: actions/checkout@v4
      - name: Install Nix
-        uses: cachix/install-nix-action@v25
+        uses: cachix/install-nix-action@V27
        with:
          extra_nix_config: |
            access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -206,3 +247,25 @@ jobs:
          path: packed-attribute
      - name: Publish to NuGet (attribute)
        run: nix develop --command dotnet nuget push "packed-attribute/WoofWare.Myriad.Plugins.Attributes.*.nupkg" --api-key ${{ secrets.NUGET_API_KEY }} --source https://api.nuget.org/v3/index.json --skip-duplicate
+
+  github-release-plugin:
+    runs-on: ubuntu-latest
+    if: ${{ !github.event.repository.fork && github.ref == 'refs/heads/main' }}
+    needs: [all-required-checks-complete]
+    environment: main-deploy
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+      - name: Download NuGet artifact (plugin)
+        uses: actions/download-artifact@v4
+        with:
+          name: nuget-package-plugin
+      - name: Download NuGet artifact (attribute)
+        uses: actions/download-artifact@v4
+        with:
+          name: nuget-package-attribute
+      - name: Tag and release plugin
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: sh .github/workflows/tag.sh
--- a/.github/workflows/tag.sh
+++ b/.github/workflows/tag.sh
@@ -0,0 +1,120 @@
+#!/bin/bash
+
+echo "Dry-run? $DRY_RUN!"
+
+find . -maxdepth 1 -type f ! -name "$(printf "*\n*")" -name '*.nupkg' | while IFS= read -r file
+do
+    tag=$(basename "$file" .nupkg)
+    git tag "$tag"
+    ${DRY_RUN:+echo} git push origin "$tag"
+done
+
+export TAG
+TAG=$(find . -maxdepth 1 -type f -name 'WoofWare.Myriad.Plugins.*.nupkg' -exec sh -c 'basename "$1" .nupkg' shell {} \; | grep -v Attributes)
+
+case "$TAG" in
+  *"
+"*)
+    echo "Error: TAG contains a newline; multiple plugins found."
+    exit 1
+    ;;
+esac
+
+# target_commitish empty indicates the repo default branch
+curl_body='{"tag_name":"'"$TAG"'","target_commitish":"","name":"'"$TAG"'","draft":false,"prerelease":false,"generate_release_notes":false}'
+
+echo "cURL body: $curl_body"
+
+failed_output=$(cat <<'EOF'
+{
+  "message": "Validation Failed",
+  "errors": [
+    {
+      "resource": "Release",
+      "code": "already_exists",
+      "field": "tag_name"
+    }
+  ],
+  "documentation_url": "https://docs.github.com/rest/releases/releases#create-a-release"
+}
+EOF
+)
+
+success_output=$(cat <<'EOF'
+{
+  "url": "https://api.github.com/repos/Smaug123/WoofWare.Myriad/releases/158152116",
+  "assets_url": "https://api.github.com/repos/Smaug123/WoofWare.Myriad/releases/158152116/assets",
+  "upload_url": "https://uploads.github.com/repos/Smaug123/WoofWare.Myriad/releases/158152116/assets{?name,label}",
+  "html_url": "https://github.com/Smaug123/WoofWare.Myriad/releases/tag/WoofWare.Myriad.Plugins.2.1.30",
+  "id": 158152116,
+  "author": {
+    "login": "github-actions[bot]",
+    "id": 41898282,
+    "node_id": "MDM6Qm90NDE4OTgyODI=",
+    "avatar_url": "https://avatars.githubusercontent.com/in/15368?v=4",
+    "gravatar_id": "",
+    "url": "https://api.github.com/users/github-actions%5Bbot%5D",
+    "html_url": "https://github.com/apps/github-actions",
+    "followers_url": "https://api.github.com/users/github-actions%5Bbot%5D/followers",
+    "following_url": "https://api.github.com/users/github-actions%5Bbot%5D/following{/other_user}",
+    "gists_url": "https://api.github.com/users/github-actions%5Bbot%5D/gists{/gist_id}",
+    "starred_url": "https://api.github.com/users/github-actions%5Bbot%5D/starred{/owner}{/repo}",
+    "subscriptions_url": "https://api.github.com/users/github-actions%5Bbot%5D/subscriptions",
+    "organizations_url": "https://api.github.com/users/github-actions%5Bbot%5D/orgs",
+    "repos_url": "https://api.github.com/users/github-actions%5Bbot%5D/repos",
+    "events_url": "https://api.github.com/users/github-actions%5Bbot%5D/events{/privacy}",
+    "received_events_url": "https://api.github.com/users/github-actions%5Bbot%5D/received_events",
+    "type": "Bot",
+    "site_admin": false
+  },
+  "node_id": "RE_kwDOJfksgc4JbTW0",
+  "tag_name": "WoofWare.Myriad.Plugins.2.1.30",
+  "target_commitish": "main",
+  "name": "WoofWare.Myriad.Plugins.2.1.30",
+  "draft": false,
+  "prerelease": false,
+  "created_at": "2024-05-30T11:00:55Z",
+  "published_at": "2024-05-30T11:03:02Z",
+  "assets": [
+
+  ],
+  "tarball_url": "https://api.github.com/repos/Smaug123/WoofWare.Myriad/tarball/WoofWare.Myriad.Plugins.2.1.30",
+  "zipball_url": "https://api.github.com/repos/Smaug123/WoofWare.Myriad/zipball/WoofWare.Myriad.Plugins.2.1.30",
+  "body": null
+}
+EOF
+)
+
+HANDLE_OUTPUT=''
+handle_error() {
+    ERROR_OUTPUT="$1"
+    exit_message=$(echo "$ERROR_OUTPUT" | jq -r --exit-status 'if .errors | length == 1 then .errors[0].code else null end')
+    if [ "$exit_message" = "already_exists" ] ; then
+        HANDLE_OUTPUT="Did not create GitHub release because it already exists at this version."
+    else
+        echo "Unexpected error output from curl: $(cat curl_output.json)"
+        echo "JQ output: $(exit_message)"
+        exit 2
+    fi
+}
+
+run_tests() {
+    handle_error "$failed_output"
+    if [ "$HANDLE_OUTPUT" != "Did not create GitHub release because it already exists at this version." ]; then
+        echo "Bad output from handler: $HANDLE_OUTPUT"
+        exit 3
+    fi
+    HANDLE_OUTPUT=''
+    echo "Tests passed."
+}
+
+run_tests
+
+if [ "$DRY_RUN" != 1 ] ; then
+    if curl --fail-with-body -L -X POST -H "Accept: application/vnd.github+json" -H "Authorization: Bearer $GITHUB_TOKEN" -H "X-GitHub-Api-Version: 2022-11-28" https://api.github.com/repos/Smaug123/WoofWare.Myriad/releases -d "$curl_body" > curl_output.json; then
+        echo "Curl succeeded."
+    else
+        handle_error "$(cat curl_output.json)"
+        echo "$HANDLE_OUTPUT"
+    fi
+fi
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,27 @@
 Notable changes are recorded here.

-# WoofWare.Myriad.Plugins 1.4 -> 2.0
+# WoofWare.Myriad.Plugins 2.1.33
+
+`JsonParse` can now deserialize the discriminated unions which `JsonSerialize` wrote out.
+
+# WoofWare.Myriad.Plugins 2.1.32, WoofWare.Myriad.Plugins.Attributes 3.1.4
+
+`JsonSerialize` can now serialize many discriminated unions.
+(This operation is inherently opinionated, because JSON does not model discriminated unions.)
+
+# WoofWare.Myriad.Plugins 2.1.20, WoofWare.Myriad.Plugins.Attributes 3.0.1
+
+We now bundle copies of the RestEase attributes in `WoofWare.Myriad.Plugins.Attributes`, in case you don't want to take a dependency on RestEase.
+
+# WoofWare.Myriad.Plugins 2.1.15
+
+The `GenerateMock` generator now permits a limited amount of inheritance in the record we're mocking out (specifically, `IDisposable`).
+
+# WoofWare.Myriad.Plugins 2.1.8
+
+No change to the packages, but this is when we started creating and tagging GitHub releases, which are a better source of truth than this file.
+
+# WoofWare.Myriad.Plugins 2.0

 This transition split the attributes (e.g. `[<JsonParseAttribute>]`) into their own assembly, WoofWare.Myriad.Plugins.Attributes.
 The new assembly has minimal dependencies, so you may safely use it from your own code.
--- a/ConsumePlugin/Catamorphism.fs
+++ b/ConsumePlugin/Catamorphism.fs
@@ -2,8 +2,8 @@ namespace ConsumePlugin

 open WoofWare.Myriad.Plugins

-type Const =
-    | Int of int
+type Const<'a> =
+    | Verbatim of 'a
    | String of string

 type PairOpKind =
@@ -11,12 +11,12 @@ type PairOpKind =
    | ThenDoSeq

 [<CreateCatamorphism "TreeCata">]
-type Tree =
-    | Const of Const
-    | Pair of Tree * Tree * PairOpKind
-    | Sequential of Tree list
-    | Builder of Tree * TreeBuilder
+type Tree<'a, 'b> =
+    | Const of Const<'a> * 'b
+    | Pair of Tree<'a, 'b> * Tree<'a, 'b> * PairOpKind
+    | Sequential of Tree<'a, 'b> list
+    | Builder of Tree<'a, 'b> * TreeBuilder<'b, 'a>

-and TreeBuilder =
-    | Child of TreeBuilder
-    | Parent of Tree
+and TreeBuilder<'b, 'a> =
+    | Child of TreeBuilder<'b, 'a>
+    | Parent of Tree<'a, 'b>
--- a/ConsumePlugin/ConsumePlugin.fsproj
+++ b/ConsumePlugin/ConsumePlugin.fsproj
@@ -47,6 +47,10 @@
    <Compile Include="GeneratedFileSystem.fs">
      <MyriadFile>FSharpForFunAndProfitCata.fs</MyriadFile>
    </Compile>
+    <Compile Include="List.fs" />
+    <Compile Include="ListCata.fs">
+      <MyriadFile>List.fs</MyriadFile>
+    </Compile>
  </ItemGroup>

  <ItemGroup>
--- a/ConsumePlugin/GeneratedCatamorphism.fs
+++ b/ConsumePlugin/GeneratedCatamorphism.fs
@@ -12,16 +12,16 @@ namespace ConsumePlugin
 open WoofWare.Myriad.Plugins

 /// Description of how to combine cases during a fold
-type TreeBuilderCataCase<'TreeBuilder, 'Tree> =
+type TreeBuilderCataCase<'b, 'a, 'TreeBuilder, 'Tree> =
    /// How to operate on the Child case
    abstract Child : 'TreeBuilder -> 'TreeBuilder
    /// How to operate on the Parent case
    abstract Parent : 'Tree -> 'TreeBuilder

 /// Description of how to combine cases during a fold
-type TreeCataCase<'TreeBuilder, 'Tree> =
+type TreeCataCase<'a, 'b, 'TreeBuilder, 'Tree> =
    /// How to operate on the Const case
-    abstract Const : Const -> 'Tree
+    abstract Const : Const<'a> -> 'b -> 'Tree
    /// How to operate on the Pair case
    abstract Pair : 'Tree -> 'Tree -> PairOpKind -> 'Tree
    /// How to operate on the Sequential case
@@ -30,37 +30,37 @@ type TreeCataCase<'TreeBuilder, 'Tree> =
    abstract Builder : 'Tree -> 'TreeBuilder -> 'Tree

 /// Specifies how to perform a fold (catamorphism) over the type Tree and its friends.
-type TreeCata<'TreeBuilder, 'Tree> =
+type TreeCata<'b, 'a, 'TreeBuilder, 'Tree> =
    {
        /// How to perform a fold (catamorphism) over the type TreeBuilder
-        TreeBuilder : TreeBuilderCataCase<'TreeBuilder, 'Tree>
+        TreeBuilder : TreeBuilderCataCase<'b, 'a, 'TreeBuilder, 'Tree>
        /// How to perform a fold (catamorphism) over the type Tree
-        Tree : TreeCataCase<'TreeBuilder, 'Tree>
+        Tree : TreeCataCase<'a, 'b, 'TreeBuilder, 'Tree>
    }

 /// Methods to perform a catamorphism over the type Tree
 [<RequireQualifiedAccess>]
 module TreeCata =
    [<RequireQualifiedAccess>]
-    type private Instruction =
-        | Process__TreeBuilder of TreeBuilder
-        | Process__Tree of Tree
+    type private Instruction<'b, 'a> =
+        | Process__TreeBuilder of TreeBuilder<'b, 'a>
+        | Process__Tree of Tree<'a, 'b>
        | TreeBuilder_Child
        | TreeBuilder_Parent
        | Tree_Pair of PairOpKind
        | Tree_Sequential of int
        | Tree_Builder

-    let private loop (cata : TreeCata<_, _>) (instructions : ResizeArray<Instruction>) =
-        let treeStack = ResizeArray ()
-        let treeBuilderStack = ResizeArray ()
+    let private loop (cata : TreeCata<'b, 'a, 'TreeBuilder, 'Tree>) (instructions : ResizeArray<Instruction<'b, 'a>>) =
+        let treeStack = ResizeArray<'Tree> ()
+        let treeBuilderStack = ResizeArray<'TreeBuilder> ()

        while instructions.Count > 0 do
            let currentInstruction = instructions.[instructions.Count - 1]
            instructions.RemoveAt (instructions.Count - 1)

            match currentInstruction with
-            | Instruction.Process__TreeBuilder x ->
+            | Instruction.Process__TreeBuilder (x) ->
                match x with
                | TreeBuilder.Child (arg0_0) ->
                    instructions.Add Instruction.TreeBuilder_Child
@@ -68,9 +68,9 @@ module TreeCata =
                | TreeBuilder.Parent (arg0_0) ->
                    instructions.Add Instruction.TreeBuilder_Parent
                    instructions.Add (Instruction.Process__Tree arg0_0)
-            | Instruction.Process__Tree x ->
+            | Instruction.Process__Tree (x) ->
                match x with
-                | Tree.Const (arg0_0) -> cata.Tree.Const arg0_0 |> treeStack.Add
+                | Tree.Const (arg0_0, arg1_0) -> cata.Tree.Const arg0_0 arg1_0 |> treeStack.Add
                | Tree.Pair (arg0_0, arg1_0, arg2_0) ->
                    instructions.Add (Instruction.Tree_Pair (arg2_0))
                    instructions.Add (Instruction.Process__Tree arg0_0)
@@ -120,14 +120,18 @@ module TreeCata =
        treeBuilderStack, treeStack

    /// Execute the catamorphism.
-    let runTreeBuilder (cata : TreeCata<'TreeBuilderRet, 'TreeRet>) (x : TreeBuilder) : 'TreeBuilderRet =
+    let runTreeBuilder
+        (cata : TreeCata<'b, 'a, 'TreeBuilderRet, 'TreeRet>)
+        (x : TreeBuilder<'b, 'a>)
+        : 'TreeBuilderRet
+        =
        let instructions = ResizeArray ()
        instructions.Add (Instruction.Process__TreeBuilder x)
        let treeBuilderRetStack, treeRetStack = loop cata instructions
        Seq.exactlyOne treeBuilderRetStack

    /// Execute the catamorphism.
-    let runTree (cata : TreeCata<'TreeBuilderRet, 'TreeRet>) (x : Tree) : 'TreeRet =
+    let runTree (cata : TreeCata<'b, 'a, 'TreeBuilderRet, 'TreeRet>) (x : Tree<'a, 'b>) : 'TreeRet =
        let instructions = ResizeArray ()
        instructions.Add (Instruction.Process__Tree x)
        let treeBuilderRetStack, treeRetStack = loop cata instructions
--- a/ConsumePlugin/GeneratedFileSystem.fs
+++ b/ConsumePlugin/GeneratedFileSystem.fs
@@ -33,15 +33,15 @@ module FileSystemItemCata =
        | Process__FileSystemItem of FileSystemItem
        | FileSystemItem_Directory of string * int * int

-    let private loop (cata : FileSystemCata<_>) (instructions : ResizeArray<Instruction>) =
-        let fileSystemItemStack = ResizeArray ()
+    let private loop (cata : FileSystemCata<'FileSystemItem>) (instructions : ResizeArray<Instruction>) =
+        let fileSystemItemStack = ResizeArray<'FileSystemItem> ()

        while instructions.Count > 0 do
            let currentInstruction = instructions.[instructions.Count - 1]
            instructions.RemoveAt (instructions.Count - 1)

            match currentInstruction with
-            | Instruction.Process__FileSystemItem x ->
+            | Instruction.Process__FileSystemItem (x) ->
                match x with
                | FileSystemItem.Directory ({
                                                Name = name
@@ -108,15 +108,15 @@ module GiftCata =
        | Gift_Boxed
        | Gift_WithACard of string

-    let private loop (cata : GiftCata<_>) (instructions : ResizeArray<Instruction>) =
-        let giftStack = ResizeArray ()
+    let private loop (cata : GiftCata<'Gift>) (instructions : ResizeArray<Instruction>) =
+        let giftStack = ResizeArray<'Gift> ()

        while instructions.Count > 0 do
            let currentInstruction = instructions.[instructions.Count - 1]
            instructions.RemoveAt (instructions.Count - 1)

            match currentInstruction with
-            | Instruction.Process__Gift x ->
+            | Instruction.Process__Gift (x) ->
                match x with
                | Gift.Book (arg0_0) -> cata.Gift.Book arg0_0 |> giftStack.Add
                | Gift.Chocolate (arg0_0) -> cata.Gift.Chocolate arg0_0 |> giftStack.Add
--- a/ConsumePlugin/GeneratedJson.fs
+++ b/ConsumePlugin/GeneratedJson.fs
@@ -8,12 +8,11 @@
 namespace ConsumePlugin

 /// Module containing JSON parsing methods for the InnerType type
-[<RequireQualifiedAccess>]
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
+[<RequireQualifiedAccess ; CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
 module InnerType =
    /// Parse from a JSON node.
    let jsonParse (node : System.Text.Json.Nodes.JsonNode) : InnerType =
-        let Thing =
+        let arg_0 =
            (match node.[(Literals.something)] with
             | null ->
                 raise (
@@ -26,17 +25,16 @@ module InnerType =
                .GetValue<string> ()

        {
-            Thing = Thing
+            Thing = arg_0
        }
 namespace ConsumePlugin

 /// Module containing JSON parsing methods for the JsonRecordType type
-[<RequireQualifiedAccess>]
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
+[<RequireQualifiedAccess ; CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
 module JsonRecordType =
    /// Parse from a JSON node.
    let jsonParse (node : System.Text.Json.Nodes.JsonNode) : JsonRecordType =
-        let F =
+        let arg_5 =
            (match node.["f"] with
             | null ->
                 raise (
@@ -49,7 +47,7 @@ module JsonRecordType =
            |> Seq.map (fun elt -> elt.AsValue().GetValue<int> ())
            |> Array.ofSeq

-        let E =
+        let arg_4 =
            (match node.["e"] with
             | null ->
                 raise (
@@ -62,7 +60,7 @@ module JsonRecordType =
            |> Seq.map (fun elt -> elt.AsValue().GetValue<string> ())
            |> Array.ofSeq

-        let D =
+        let arg_3 =
            InnerType.jsonParse (
                match node.["d"] with
                | null ->
@@ -74,7 +72,7 @@ module JsonRecordType =
                | v -> v
            )

-        let C =
+        let arg_2 =
            (match node.["hi"] with
             | null ->
                 raise (
@@ -87,7 +85,7 @@ module JsonRecordType =
            |> Seq.map (fun elt -> elt.AsValue().GetValue<int> ())
            |> List.ofSeq

-        let B =
+        let arg_1 =
            (match node.["another-thing"] with
             | null ->
                 raise (
@@ -99,7 +97,7 @@ module JsonRecordType =
                .AsValue()
                .GetValue<string> ()

-        let A =
+        let arg_0 =
            (match node.["a"] with
             | null ->
                 raise (
@@ -112,12 +110,12 @@ module JsonRecordType =
                .GetValue<int> ()

        {
-            A = A
-            B = B
-            C = C
-            D = D
-            E = E
-            F = F
+            A = arg_0
+            B = arg_1
+            C = arg_2
+            D = arg_3
+            E = arg_4
+            F = arg_5
        }
 namespace ConsumePlugin

@@ -129,24 +127,230 @@ module ToGetExtensionMethodJsonParseExtension =

        /// Parse from a JSON node.
        static member jsonParse (node : System.Text.Json.Nodes.JsonNode) : ToGetExtensionMethod =
-            let Sailor =
-                (match node.["sailor"] with
+            let arg_20 = System.Numerics.BigInteger.Parse (node.["whiskey"].ToJsonString ())
+
+            let arg_19 =
+                (match node.["victor"] with
                 | null ->
                     raise (
                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("sailor")
+                             sprintf "Required key '%s' not found on JSON object" ("victor")
+                         )
+                     )
+                 | v -> v)
+                    .AsValue()
+                    .GetValue<System.Char> ()
+
+            let arg_18 =
+                (match node.["uniform"] with
+                 | null ->
+                     raise (
+                         System.Collections.Generic.KeyNotFoundException (
+                             sprintf "Required key '%s' not found on JSON object" ("uniform")
+                         )
+                     )
+                 | v -> v)
+                    .AsValue()
+                    .GetValue<System.Decimal> ()
+
+            let arg_17 =
+                (match node.["tango"] with
+                 | null ->
+                     raise (
+                         System.Collections.Generic.KeyNotFoundException (
+                             sprintf "Required key '%s' not found on JSON object" ("tango")
+                         )
+                     )
+                 | v -> v)
+                    .AsValue()
+                    .GetValue<System.SByte> ()
+
+            let arg_16 =
+                (match node.["quebec"] with
+                 | null ->
+                     raise (
+                         System.Collections.Generic.KeyNotFoundException (
+                             sprintf "Required key '%s' not found on JSON object" ("quebec")
+                         )
+                     )
+                 | v -> v)
+                    .AsValue()
+                    .GetValue<System.Byte> ()
+
+            let arg_15 =
+                (match node.["papa"] with
+                 | null ->
+                     raise (
+                         System.Collections.Generic.KeyNotFoundException (
+                             sprintf "Required key '%s' not found on JSON object" ("papa")
+                         )
+                     )
+                 | v -> v)
+                    .AsValue()
+                    .GetValue<System.Byte> ()
+
+            let arg_14 =
+                (match node.["oscar"] with
+                 | null ->
+                     raise (
+                         System.Collections.Generic.KeyNotFoundException (
+                             sprintf "Required key '%s' not found on JSON object" ("oscar")
+                         )
+                     )
+                 | v -> v)
+                    .AsValue()
+                    .GetValue<System.SByte> ()
+
+            let arg_13 =
+                (match node.["november"] with
+                 | null ->
+                     raise (
+                         System.Collections.Generic.KeyNotFoundException (
+                             sprintf "Required key '%s' not found on JSON object" ("november")
+                         )
+                     )
+                 | v -> v)
+                    .AsValue()
+                    .GetValue<System.UInt16> ()
+
+            let arg_12 =
+                (match node.["mike"] with
+                 | null ->
+                     raise (
+                         System.Collections.Generic.KeyNotFoundException (
+                             sprintf "Required key '%s' not found on JSON object" ("mike")
+                         )
+                     )
+                 | v -> v)
+                    .AsValue()
+                    .GetValue<System.Int16> ()
+
+            let arg_11 =
+                (match node.["lima"] with
+                 | null ->
+                     raise (
+                         System.Collections.Generic.KeyNotFoundException (
+                             sprintf "Required key '%s' not found on JSON object" ("lima")
+                         )
+                     )
+                 | v -> v)
+                    .AsValue()
+                    .GetValue<System.UInt32> ()
+
+            let arg_10 =
+                (match node.["kilo"] with
+                 | null ->
+                     raise (
+                         System.Collections.Generic.KeyNotFoundException (
+                             sprintf "Required key '%s' not found on JSON object" ("kilo")
+                         )
+                     )
+                 | v -> v)
+                    .AsValue()
+                    .GetValue<System.Int32> ()
+
+            let arg_9 =
+                (match node.["juliette"] with
+                 | null ->
+                     raise (
+                         System.Collections.Generic.KeyNotFoundException (
+                             sprintf "Required key '%s' not found on JSON object" ("juliette")
+                         )
+                     )
+                 | v -> v)
+                    .AsValue()
+                    .GetValue<System.UInt32> ()
+
+            let arg_8 =
+                (match node.["india"] with
+                 | null ->
+                     raise (
+                         System.Collections.Generic.KeyNotFoundException (
+                             sprintf "Required key '%s' not found on JSON object" ("india")
+                         )
+                     )
+                 | v -> v)
+                    .AsValue()
+                    .GetValue<int> ()
+
+            let arg_7 =
+                (match node.["hotel"] with
+                 | null ->
+                     raise (
+                         System.Collections.Generic.KeyNotFoundException (
+                             sprintf "Required key '%s' not found on JSON object" ("hotel")
+                         )
+                     )
+                 | v -> v)
+                    .AsValue()
+                    .GetValue<System.UInt64> ()
+
+            let arg_6 =
+                (match node.["golf"] with
+                 | null ->
+                     raise (
+                         System.Collections.Generic.KeyNotFoundException (
+                             sprintf "Required key '%s' not found on JSON object" ("golf")
+                         )
+                     )
+                 | v -> v)
+                    .AsValue()
+                    .GetValue<System.Int64> ()
+
+            let arg_5 =
+                (match node.["foxtrot"] with
+                 | null ->
+                     raise (
+                         System.Collections.Generic.KeyNotFoundException (
+                             sprintf "Required key '%s' not found on JSON object" ("foxtrot")
+                         )
+                     )
+                 | v -> v)
+                    .AsValue()
+                    .GetValue<System.Double> ()
+
+            let arg_4 =
+                (match node.["echo"] with
+                 | null ->
+                     raise (
+                         System.Collections.Generic.KeyNotFoundException (
+                             sprintf "Required key '%s' not found on JSON object" ("echo")
+                         )
+                     )
+                 | v -> v)
+                    .AsValue()
+                    .GetValue<System.Single> ()
+
+            let arg_3 =
+                (match node.["delta"] with
+                 | null ->
+                     raise (
+                         System.Collections.Generic.KeyNotFoundException (
+                             sprintf "Required key '%s' not found on JSON object" ("delta")
+                         )
+                     )
+                 | v -> v)
+                    .AsValue()
+                    .GetValue<System.Single> ()
+
+            let arg_2 =
+                (match node.["charlie"] with
+                 | null ->
+                     raise (
+                         System.Collections.Generic.KeyNotFoundException (
+                             sprintf "Required key '%s' not found on JSON object" ("charlie")
                         )
                     )
                 | v -> v)
                    .AsValue()
                    .GetValue<float> ()

-            let Soldier =
-                (match node.["soldier"] with
+            let arg_1 =
+                (match node.["bravo"] with
                 | null ->
                     raise (
                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("soldier")
+                             sprintf "Required key '%s' not found on JSON object" ("bravo")
                         )
                     )
                 | v -> v)
@@ -154,24 +358,12 @@ module ToGetExtensionMethodJsonParseExtension =
                    .GetValue<string> ()
                |> System.Uri

-            let Tailor =
-                (match node.["tailor"] with
+            let arg_0 =
+                (match node.["alpha"] with
                 | null ->
                     raise (
                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("tailor")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<int> ()
-
-            let Tinker =
-                (match node.["tinker"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("tinker")
+                             sprintf "Required key '%s' not found on JSON object" ("alpha")
                         )
                     )
                 | v -> v)
@@ -179,8 +371,25 @@ module ToGetExtensionMethodJsonParseExtension =
                    .GetValue<string> ()

            {
-                Tinker = Tinker
-                Tailor = Tailor
-                Soldier = Soldier
-                Sailor = Sailor
+                Alpha = arg_0
+                Bravo = arg_1
+                Charlie = arg_2
+                Delta = arg_3
+                Echo = arg_4
+                Foxtrot = arg_5
+                Golf = arg_6
+                Hotel = arg_7
+                India = arg_8
+                Juliette = arg_9
+                Kilo = arg_10
+                Lima = arg_11
+                Mike = arg_12
+                November = arg_13
+                Oscar = arg_14
+                Papa = arg_15
+                Quebec = arg_16
+                Tango = arg_17
+                Uniform = arg_18
+                Victor = arg_19
+                Whiskey = arg_20
            }
--- a/ConsumePlugin/GeneratedMock.fs
+++ b/ConsumePlugin/GeneratedMock.fs
@@ -5,6 +5,7 @@

 namespace SomeNamespace

+open System
 open WoofWare.Myriad.Plugins

 /// Mock record type for an interface
@@ -18,17 +19,18 @@ type internal PublicTypeMock =
    /// An implementation where every method throws.
    static member Empty : PublicTypeMock =
        {
-            Mem1 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
-            Mem2 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
-            Mem3 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem1 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem2 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem3 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
        }

    interface IPublicType with
        member this.Mem1 (arg_0_0, arg_0_1) = this.Mem1 (arg_0_0, arg_0_1)
-        member this.Mem2 (arg_0_0) = this.Mem2 (arg_0_0)
+        member this.Mem2 arg_0_0 = this.Mem2 (arg_0_0)
        member this.Mem3 (arg_0_0, arg_0_1) = this.Mem3 (arg_0_0, arg_0_1)
 namespace SomeNamespace

+open System
 open WoofWare.Myriad.Plugins

 /// Mock record type for an interface
@@ -42,17 +44,18 @@ type public PublicTypeInternalFalseMock =
    /// An implementation where every method throws.
    static member Empty : PublicTypeInternalFalseMock =
        {
-            Mem1 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
-            Mem2 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
-            Mem3 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem1 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem2 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem3 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
        }

    interface IPublicTypeInternalFalse with
        member this.Mem1 (arg_0_0, arg_0_1) = this.Mem1 (arg_0_0, arg_0_1)
-        member this.Mem2 (arg_0_0) = this.Mem2 (arg_0_0)
+        member this.Mem2 arg_0_0 = this.Mem2 (arg_0_0)
        member this.Mem3 (arg_0_0, arg_0_1) = this.Mem3 (arg_0_0, arg_0_1)
 namespace SomeNamespace

+open System
 open WoofWare.Myriad.Plugins

 /// Mock record type for an interface
@@ -65,15 +68,16 @@ type internal InternalTypeMock =
    /// An implementation where every method throws.
    static member Empty : InternalTypeMock =
        {
-            Mem1 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
-            Mem2 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem1 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem2 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
        }

    interface InternalType with
        member this.Mem1 (arg_0_0, arg_0_1) = this.Mem1 (arg_0_0, arg_0_1)
-        member this.Mem2 (arg_0_0) = this.Mem2 (arg_0_0)
+        member this.Mem2 arg_0_0 = this.Mem2 (arg_0_0)
 namespace SomeNamespace

+open System
 open WoofWare.Myriad.Plugins

 /// Mock record type for an interface
@@ -86,15 +90,16 @@ type private PrivateTypeMock =
    /// An implementation where every method throws.
    static member Empty : PrivateTypeMock =
        {
-            Mem1 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
-            Mem2 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem1 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem2 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
        }

    interface PrivateType with
        member this.Mem1 (arg_0_0, arg_0_1) = this.Mem1 (arg_0_0, arg_0_1)
-        member this.Mem2 (arg_0_0) = this.Mem2 (arg_0_0)
+        member this.Mem2 arg_0_0 = this.Mem2 (arg_0_0)
 namespace SomeNamespace

+open System
 open WoofWare.Myriad.Plugins

 /// Mock record type for an interface
@@ -107,15 +112,16 @@ type private PrivateTypeInternalFalseMock =
    /// An implementation where every method throws.
    static member Empty : PrivateTypeInternalFalseMock =
        {
-            Mem1 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
-            Mem2 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem1 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem2 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
        }

    interface PrivateTypeInternalFalse with
        member this.Mem1 (arg_0_0, arg_0_1) = this.Mem1 (arg_0_0, arg_0_1)
-        member this.Mem2 (arg_0_0) = this.Mem2 (arg_0_0)
+        member this.Mem2 arg_0_0 = this.Mem2 (arg_0_0)
 namespace SomeNamespace

+open System
 open WoofWare.Myriad.Plugins

 /// Mock record type for an interface
@@ -127,13 +133,14 @@ type internal VeryPublicTypeMock<'a, 'b> =
    /// An implementation where every method throws.
    static member Empty () : VeryPublicTypeMock<'a, 'b> =
        {
-            Mem1 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem1 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
        }

    interface VeryPublicType<'a, 'b> with
-        member this.Mem1 (arg_0_0) = this.Mem1 (arg_0_0)
+        member this.Mem1 arg_0_0 = this.Mem1 (arg_0_0)
 namespace SomeNamespace

+open System
 open WoofWare.Myriad.Plugins

 /// Mock record type for an interface
@@ -150,18 +157,18 @@ type internal CurriedMock<'a> =
    /// An implementation where every method throws.
    static member Empty () : CurriedMock<'a> =
        {
-            Mem1 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
-            Mem2 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
-            Mem3 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
-            Mem4 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
-            Mem5 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
-            Mem6 = (fun x -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem1 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem2 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem3 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem4 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem5 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem6 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
        }

    interface Curried<'a> with
-        member this.Mem1 (arg_0_0) (arg_1_0) = this.Mem1 (arg_0_0) (arg_1_0)
-        member this.Mem2 (arg_0_0, arg_0_1) (arg_1_0) = this.Mem2 (arg_0_0, arg_0_1) (arg_1_0)
-        member this.Mem3 ((arg_0_0, arg_0_1)) (arg_1_0) = this.Mem3 (arg_0_0, arg_0_1) (arg_1_0)
+        member this.Mem1 arg_0_0 arg_1_0 = this.Mem1 (arg_0_0) (arg_1_0)
+        member this.Mem2 (arg_0_0, arg_0_1) arg_1_0 = this.Mem2 (arg_0_0, arg_0_1) (arg_1_0)
+        member this.Mem3 ((arg_0_0, arg_0_1)) arg_1_0 = this.Mem3 (arg_0_0, arg_0_1) (arg_1_0)

        member this.Mem4 ((arg_0_0, arg_0_1)) ((arg_1_0, arg_1_1)) =
            this.Mem4 (arg_0_0, arg_0_1) (arg_1_0, arg_1_1)
@@ -171,3 +178,31 @@ type internal CurriedMock<'a> =

        member this.Mem6 (arg_0_0, arg_0_1) (arg_1_0, arg_1_1) =
            this.Mem6 (arg_0_0, arg_0_1) (arg_1_0, arg_1_1)
+namespace SomeNamespace
+
+open System
+open WoofWare.Myriad.Plugins
+
+/// Mock record type for an interface
+type internal TypeWithInterfaceMock =
+    {
+        /// Implementation of IDisposable.Dispose
+        Dispose : unit -> unit
+        Mem1 : string option -> string[] Async
+        Mem2 : unit -> string[] Async
+    }
+
+    /// An implementation where every method throws.
+    static member Empty : TypeWithInterfaceMock =
+        {
+            Dispose = (fun _ -> ())
+            Mem1 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
+            Mem2 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function"))
+        }
+
+    interface TypeWithInterface with
+        member this.Mem1 arg_0_0 = this.Mem1 (arg_0_0)
+        member this.Mem2 () = this.Mem2 (())
+
+    interface System.IDisposable with
+        member this.Dispose () : unit = this.Dispose ()
--- a/ConsumePlugin/GeneratedPureGymDto.fs
+++ b/ConsumePlugin/GeneratedPureGymDto.fs
@@ -41,12 +41,11 @@ module MemberJsonSerializeExtension =
 namespace PureGym

 /// Module containing JSON parsing methods for the GymOpeningHours type
-[<RequireQualifiedAccess>]
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
+[<RequireQualifiedAccess ; CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
 module GymOpeningHours =
    /// Parse from a JSON node.
    let jsonParse (node : System.Text.Json.Nodes.JsonNode) : GymOpeningHours =
-        let OpeningHours =
+        let arg_1 =
            (match node.["openingHours"] with
             | null ->
                 raise (
@@ -59,7 +58,7 @@ module GymOpeningHours =
            |> Seq.map (fun elt -> elt.AsValue().GetValue<string> ())
            |> List.ofSeq

-        let IsAlwaysOpen =
+        let arg_0 =
            (match node.["isAlwaysOpen"] with
             | null ->
                 raise (
@@ -72,18 +71,17 @@ module GymOpeningHours =
                .GetValue<bool> ()

        {
-            IsAlwaysOpen = IsAlwaysOpen
-            OpeningHours = OpeningHours
+            IsAlwaysOpen = arg_0
+            OpeningHours = arg_1
        }
 namespace PureGym

 /// Module containing JSON parsing methods for the GymAccessOptions type
-[<RequireQualifiedAccess>]
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
+[<RequireQualifiedAccess ; CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
 module GymAccessOptions =
    /// Parse from a JSON node.
    let jsonParse (node : System.Text.Json.Nodes.JsonNode) : GymAccessOptions =
-        let QrCodeAccess =
+        let arg_1 =
            (match node.["qrCodeAccess"] with
             | null ->
                 raise (
@@ -95,7 +93,7 @@ module GymAccessOptions =
                .AsValue()
                .GetValue<bool> ()

-        let PinAccess =
+        let arg_0 =
            (match node.["pinAccess"] with
             | null ->
                 raise (
@@ -108,18 +106,17 @@ module GymAccessOptions =
                .GetValue<bool> ()

        {
-            PinAccess = PinAccess
-            QrCodeAccess = QrCodeAccess
+            PinAccess = arg_0
+            QrCodeAccess = arg_1
        }
 namespace PureGym

 /// Module containing JSON parsing methods for the GymLocation type
-[<RequireQualifiedAccess>]
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
+[<RequireQualifiedAccess ; CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
 module GymLocation =
    /// Parse from a JSON node.
    let jsonParse (node : System.Text.Json.Nodes.JsonNode) : GymLocation =
-        let Latitude =
+        let arg_1 =
            try
                (match node.["latitude"] with
                 | null ->
@@ -152,7 +149,7 @@ module GymLocation =
                else
                    reraise ()

-        let Longitude =
+        let arg_0 =
            try
                (match node.["longitude"] with
                 | null ->
@@ -186,18 +183,17 @@ module GymLocation =
                    reraise ()

        {
-            Longitude = Longitude
-            Latitude = Latitude
+            Longitude = arg_0
+            Latitude = arg_1
        }
 namespace PureGym

 /// Module containing JSON parsing methods for the GymAddress type
-[<RequireQualifiedAccess>]
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
+[<RequireQualifiedAccess ; CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
 module GymAddress =
    /// Parse from a JSON node.
    let jsonParse (node : System.Text.Json.Nodes.JsonNode) : GymAddress =
-        let Postcode =
+        let arg_5 =
            (match node.["postcode"] with
             | null ->
                 raise (
@@ -209,12 +205,12 @@ module GymAddress =
                .AsValue()
                .GetValue<string> ()

-        let County =
+        let arg_4 =
            match node.["county"] with
            | null -> None
            | v -> v.AsValue().GetValue<string> () |> Some

-        let Town =
+        let arg_3 =
            (match node.["town"] with
             | null ->
                 raise (
@@ -226,17 +222,17 @@ module GymAddress =
                .AsValue()
                .GetValue<string> ()

-        let AddressLine3 =
+        let arg_2 =
            match node.["addressLine3"] with
            | null -> None
            | v -> v.AsValue().GetValue<string> () |> Some

-        let AddressLine2 =
+        let arg_1 =
            match node.["addressLine2"] with
            | null -> None
            | v -> v.AsValue().GetValue<string> () |> Some

-        let AddressLine1 =
+        let arg_0 =
            (match node.["addressLine1"] with
             | null ->
                 raise (
@@ -249,22 +245,21 @@ module GymAddress =
                .GetValue<string> ()

        {
-            AddressLine1 = AddressLine1
-            AddressLine2 = AddressLine2
-            AddressLine3 = AddressLine3
-            Town = Town
-            County = County
-            Postcode = Postcode
+            AddressLine1 = arg_0
+            AddressLine2 = arg_1
+            AddressLine3 = arg_2
+            Town = arg_3
+            County = arg_4
+            Postcode = arg_5
        }
 namespace PureGym

 /// Module containing JSON parsing methods for the Gym type
-[<RequireQualifiedAccess>]
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
+[<RequireQualifiedAccess ; CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
 module Gym =
    /// Parse from a JSON node.
    let jsonParse (node : System.Text.Json.Nodes.JsonNode) : Gym =
-        let ReopenDate =
+        let arg_10 =
            (match node.["reopenDate"] with
             | null ->
                 raise (
@@ -276,7 +271,7 @@ module Gym =
                .AsValue()
                .GetValue<string> ()

-        let TimeZone =
+        let arg_9 =
            (match node.["timeZone"] with
             | null ->
                 raise (
@@ -288,7 +283,7 @@ module Gym =
                .AsValue()
                .GetValue<string> ()

-        let Location =
+        let arg_8 =
            GymLocation.jsonParse (
                match node.["location"] with
                | null ->
@@ -300,7 +295,7 @@ module Gym =
                | v -> v
            )

-        let AccessOptions =
+        let arg_7 =
            GymAccessOptions.jsonParse (
                match node.["accessOptions"] with
                | null ->
@@ -312,7 +307,7 @@ module Gym =
                | v -> v
            )

-        let GymOpeningHours =
+        let arg_6 =
            GymOpeningHours.jsonParse (
                match node.["gymOpeningHours"] with
                | null ->
@@ -324,7 +319,7 @@ module Gym =
                | v -> v
            )

-        let EmailAddress =
+        let arg_5 =
            (match node.["emailAddress"] with
             | null ->
                 raise (
@@ -336,7 +331,7 @@ module Gym =
                .AsValue()
                .GetValue<string> ()

-        let PhoneNumber =
+        let arg_4 =
            (match node.["phoneNumber"] with
             | null ->
                 raise (
@@ -348,7 +343,7 @@ module Gym =
                .AsValue()
                .GetValue<string> ()

-        let Address =
+        let arg_3 =
            GymAddress.jsonParse (
                match node.["address"] with
                | null ->
@@ -360,7 +355,7 @@ module Gym =
                | v -> v
            )

-        let Status =
+        let arg_2 =
            (match node.["status"] with
             | null ->
                 raise (
@@ -372,7 +367,7 @@ module Gym =
                .AsValue()
                .GetValue<int> ()

-        let Id =
+        let arg_1 =
            (match node.["id"] with
             | null ->
                 raise (
@@ -384,7 +379,7 @@ module Gym =
                .AsValue()
                .GetValue<int> ()

-        let Name =
+        let arg_0 =
            (match node.["name"] with
             | null ->
                 raise (
@@ -397,17 +392,17 @@ module Gym =
                .GetValue<string> ()

        {
-            Name = Name
-            Id = Id
-            Status = Status
-            Address = Address
-            PhoneNumber = PhoneNumber
-            EmailAddress = EmailAddress
-            GymOpeningHours = GymOpeningHours
-            AccessOptions = AccessOptions
-            Location = Location
-            TimeZone = TimeZone
-            ReopenDate = ReopenDate
+            Name = arg_0
+            Id = arg_1
+            Status = arg_2
+            Address = arg_3
+            PhoneNumber = arg_4
+            EmailAddress = arg_5
+            GymOpeningHours = arg_6
+            AccessOptions = arg_7
+            Location = arg_8
+            TimeZone = arg_9
+            ReopenDate = arg_10
        }
 namespace PureGym

@@ -419,7 +414,7 @@ module MemberJsonParseExtension =

        /// Parse from a JSON node.
        static member jsonParse (node : System.Text.Json.Nodes.JsonNode) : Member =
-            let MemberStatus =
+            let arg_14 =
                (match node.["memberStatus"] with
                 | null ->
                     raise (
@@ -431,7 +426,7 @@ module MemberJsonParseExtension =
                    .AsValue()
                    .GetValue<int> ()

-            let SuspendedReason =
+            let arg_13 =
                (match node.["suspendedReason"] with
                 | null ->
                     raise (
@@ -443,7 +438,7 @@ module MemberJsonParseExtension =
                    .AsValue()
                    .GetValue<int> ()

-            let MembershipLevel =
+            let arg_12 =
                (match node.["membershipLevel"] with
                 | null ->
                     raise (
@@ -455,7 +450,7 @@ module MemberJsonParseExtension =
                    .AsValue()
                    .GetValue<int> ()

-            let MembershipName =
+            let arg_11 =
                (match node.["membershipName"] with
                 | null ->
                     raise (
@@ -467,7 +462,7 @@ module MemberJsonParseExtension =
                    .AsValue()
                    .GetValue<string> ()

-            let Postcode =
+            let arg_10 =
                (match node.["postCode"] with
                 | null ->
                     raise (
@@ -479,7 +474,7 @@ module MemberJsonParseExtension =
                    .AsValue()
                    .GetValue<string> ()

-            let MobileNumber =
+            let arg_9 =
                (match node.["mobileNumber"] with
                 | null ->
                     raise (
@@ -491,7 +486,7 @@ module MemberJsonParseExtension =
                    .AsValue()
                    .GetValue<string> ()

-            let DateOfBirth =
+            let arg_8 =
                (match node.["dateofBirth"] with
                 | null ->
                     raise (
@@ -504,7 +499,7 @@ module MemberJsonParseExtension =
                    .GetValue<string> ()
                |> System.DateOnly.Parse

-            let GymAccessPin =
+            let arg_7 =
                (match node.["gymAccessPin"] with
                 | null ->
                     raise (
@@ -516,7 +511,7 @@ module MemberJsonParseExtension =
                    .AsValue()
                    .GetValue<string> ()

-            let EmailAddress =
+            let arg_6 =
                (match node.["emailAddress"] with
                 | null ->
                     raise (
@@ -528,7 +523,7 @@ module MemberJsonParseExtension =
                    .AsValue()
                    .GetValue<string> ()

-            let HomeGymName =
+            let arg_5 =
                (match node.["homeGymName"] with
                 | null ->
                     raise (
@@ -540,7 +535,7 @@ module MemberJsonParseExtension =
                    .AsValue()
                    .GetValue<string> ()

-            let HomeGymId =
+            let arg_4 =
                (match node.["homeGymId"] with
                 | null ->
                     raise (
@@ -552,7 +547,7 @@ module MemberJsonParseExtension =
                    .AsValue()
                    .GetValue<int> ()

-            let LastName =
+            let arg_3 =
                (match node.["lastName"] with
                 | null ->
                     raise (
@@ -564,7 +559,7 @@ module MemberJsonParseExtension =
                    .AsValue()
                    .GetValue<string> ()

-            let FirstName =
+            let arg_2 =
                (match node.["firstName"] with
                 | null ->
                     raise (
@@ -576,7 +571,7 @@ module MemberJsonParseExtension =
                    .AsValue()
                    .GetValue<string> ()

-            let CompoundMemberId =
+            let arg_1 =
                (match node.["compoundMemberId"] with
                 | null ->
                     raise (
@@ -588,7 +583,7 @@ module MemberJsonParseExtension =
                    .AsValue()
                    .GetValue<string> ()

-            let Id =
+            let arg_0 =
                (match node.["id"] with
                 | null ->
                     raise (
@@ -601,31 +596,30 @@ module MemberJsonParseExtension =
                    .GetValue<int> ()

            {
-                Id = Id
-                CompoundMemberId = CompoundMemberId
-                FirstName = FirstName
-                LastName = LastName
-                HomeGymId = HomeGymId
-                HomeGymName = HomeGymName
-                EmailAddress = EmailAddress
-                GymAccessPin = GymAccessPin
-                DateOfBirth = DateOfBirth
-                MobileNumber = MobileNumber
-                Postcode = Postcode
-                MembershipName = MembershipName
-                MembershipLevel = MembershipLevel
-                SuspendedReason = SuspendedReason
-                MemberStatus = MemberStatus
+                Id = arg_0
+                CompoundMemberId = arg_1
+                FirstName = arg_2
+                LastName = arg_3
+                HomeGymId = arg_4
+                HomeGymName = arg_5
+                EmailAddress = arg_6
+                GymAccessPin = arg_7
+                DateOfBirth = arg_8
+                MobileNumber = arg_9
+                Postcode = arg_10
+                MembershipName = arg_11
+                MembershipLevel = arg_12
+                SuspendedReason = arg_13
+                MemberStatus = arg_14
            }
 namespace PureGym

 /// Module containing JSON parsing methods for the GymAttendance type
-[<RequireQualifiedAccess>]
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
+[<RequireQualifiedAccess ; CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
 module GymAttendance =
    /// Parse from a JSON node.
    let jsonParse (node : System.Text.Json.Nodes.JsonNode) : GymAttendance =
-        let MaximumCapacity =
+        let arg_8 =
            (match node.["maximumCapacity"] with
             | null ->
                 raise (
@@ -637,7 +631,7 @@ module GymAttendance =
                .AsValue()
                .GetValue<int> ()

-        let LastRefreshedPeopleInClasses =
+        let arg_7 =
            (match node.["lastRefreshedPeopleInClasses"] with
             | null ->
                 raise (
@@ -650,7 +644,7 @@ module GymAttendance =
                .GetValue<string> ()
            |> System.DateTime.Parse

-        let LastRefreshed =
+        let arg_6 =
            (match node.["lastRefreshed"] with
             | null ->
                 raise (
@@ -663,7 +657,7 @@ module GymAttendance =
                .GetValue<string> ()
            |> System.DateTime.Parse

-        let AttendanceTime =
+        let arg_5 =
            (match node.["attendanceTime"] with
             | null ->
                 raise (
@@ -676,7 +670,7 @@ module GymAttendance =
                .GetValue<string> ()
            |> System.DateTime.Parse

-        let IsApproximate =
+        let arg_4 =
            (match node.["isApproximate"] with
             | null ->
                 raise (
@@ -688,12 +682,12 @@ module GymAttendance =
                .AsValue()
                .GetValue<bool> ()

-        let TotalPeopleSuffix =
+        let arg_3 =
            match node.["totalPeopleSuffix"] with
            | null -> None
            | v -> v.AsValue().GetValue<string> () |> Some

-        let TotalPeopleInClasses =
+        let arg_2 =
            (match node.["totalPeopleInClasses"] with
             | null ->
                 raise (
@@ -705,7 +699,7 @@ module GymAttendance =
                .AsValue()
                .GetValue<int> ()

-        let TotalPeopleInGym =
+        let arg_1 =
            (match node.["totalPeopleInGym"] with
             | null ->
                 raise (
@@ -717,7 +711,7 @@ module GymAttendance =
                .AsValue()
                .GetValue<int> ()

-        let Description =
+        let arg_0 =
            (match node.["description"] with
             | null ->
                 raise (
@@ -730,25 +724,24 @@ module GymAttendance =
                .GetValue<string> ()

        {
-            Description = Description
-            TotalPeopleInGym = TotalPeopleInGym
-            TotalPeopleInClasses = TotalPeopleInClasses
-            TotalPeopleSuffix = TotalPeopleSuffix
-            IsApproximate = IsApproximate
-            AttendanceTime = AttendanceTime
-            LastRefreshed = LastRefreshed
-            LastRefreshedPeopleInClasses = LastRefreshedPeopleInClasses
-            MaximumCapacity = MaximumCapacity
+            Description = arg_0
+            TotalPeopleInGym = arg_1
+            TotalPeopleInClasses = arg_2
+            TotalPeopleSuffix = arg_3
+            IsApproximate = arg_4
+            AttendanceTime = arg_5
+            LastRefreshed = arg_6
+            LastRefreshedPeopleInClasses = arg_7
+            MaximumCapacity = arg_8
        }
 namespace PureGym

 /// Module containing JSON parsing methods for the MemberActivityDto type
-[<RequireQualifiedAccess>]
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
+[<RequireQualifiedAccess ; CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
 module MemberActivityDto =
    /// Parse from a JSON node.
    let jsonParse (node : System.Text.Json.Nodes.JsonNode) : MemberActivityDto =
-        let LastRefreshed =
+        let arg_5 =
            (match node.["lastRefreshed"] with
             | null ->
                 raise (
@@ -761,7 +754,7 @@ module MemberActivityDto =
                .GetValue<string> ()
            |> System.DateTime.Parse

-        let IsEstimated =
+        let arg_4 =
            (match node.["isEstimated"] with
             | null ->
                 raise (
@@ -773,7 +766,7 @@ module MemberActivityDto =
                .AsValue()
                .GetValue<bool> ()

-        let TotalClasses =
+        let arg_3 =
            (match node.["totalClasses"] with
             | null ->
                 raise (
@@ -785,7 +778,7 @@ module MemberActivityDto =
                .AsValue()
                .GetValue<int> ()

-        let TotalVisits =
+        let arg_2 =
            (match node.["totalVisits"] with
             | null ->
                 raise (
@@ -797,7 +790,7 @@ module MemberActivityDto =
                .AsValue()
                .GetValue<int> ()

-        let AverageDuration =
+        let arg_1 =
            (match node.["averageDuration"] with
             | null ->
                 raise (
@@ -809,7 +802,7 @@ module MemberActivityDto =
                .AsValue()
                .GetValue<int> ()

-        let TotalDuration =
+        let arg_0 =
            (match node.["totalDuration"] with
             | null ->
                 raise (
@@ -822,22 +815,21 @@ module MemberActivityDto =
                .GetValue<int> ()

        {
-            TotalDuration = TotalDuration
-            AverageDuration = AverageDuration
-            TotalVisits = TotalVisits
-            TotalClasses = TotalClasses
-            IsEstimated = IsEstimated
-            LastRefreshed = LastRefreshed
+            TotalDuration = arg_0
+            AverageDuration = arg_1
+            TotalVisits = arg_2
+            TotalClasses = arg_3
+            IsEstimated = arg_4
+            LastRefreshed = arg_5
        }
 namespace PureGym

 /// Module containing JSON parsing methods for the SessionsAggregate type
-[<RequireQualifiedAccess>]
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
+[<RequireQualifiedAccess ; CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
 module SessionsAggregate =
    /// Parse from a JSON node.
    let jsonParse (node : System.Text.Json.Nodes.JsonNode) : SessionsAggregate =
-        let Duration =
+        let arg_2 =
            (match node.["Duration"] with
             | null ->
                 raise (
@@ -849,7 +841,7 @@ module SessionsAggregate =
                .AsValue()
                .GetValue<int> ()

-        let Visits =
+        let arg_1 =
            (match node.["Visits"] with
             | null ->
                 raise (
@@ -861,7 +853,7 @@ module SessionsAggregate =
                .AsValue()
                .GetValue<int> ()

-        let Activities =
+        let arg_0 =
            (match node.["Activities"] with
             | null ->
                 raise (
@@ -874,19 +866,18 @@ module SessionsAggregate =
                .GetValue<int> ()

        {
-            Activities = Activities
-            Visits = Visits
-            Duration = Duration
+            Activities = arg_0
+            Visits = arg_1
+            Duration = arg_2
        }
 namespace PureGym

 /// Module containing JSON parsing methods for the VisitGym type
-[<RequireQualifiedAccess>]
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
+[<RequireQualifiedAccess ; CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
 module VisitGym =
    /// Parse from a JSON node.
    let jsonParse (node : System.Text.Json.Nodes.JsonNode) : VisitGym =
-        let Status =
+        let arg_2 =
            (match node.["Status"] with
             | null ->
                 raise (
@@ -898,7 +889,7 @@ module VisitGym =
                .AsValue()
                .GetValue<string> ()

-        let Name =
+        let arg_1 =
            (match node.["Name"] with
             | null ->
                 raise (
@@ -910,7 +901,7 @@ module VisitGym =
                .AsValue()
                .GetValue<string> ()

-        let Id =
+        let arg_0 =
            (match node.["Id"] with
             | null ->
                 raise (
@@ -923,19 +914,18 @@ module VisitGym =
                .GetValue<int> ()

        {
-            Id = Id
-            Name = Name
-            Status = Status
+            Id = arg_0
+            Name = arg_1
+            Status = arg_2
        }
 namespace PureGym

 /// Module containing JSON parsing methods for the Visit type
-[<RequireQualifiedAccess>]
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
+[<RequireQualifiedAccess ; CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
 module Visit =
    /// Parse from a JSON node.
    let jsonParse (node : System.Text.Json.Nodes.JsonNode) : Visit =
-        let Gym =
+        let arg_3 =
            VisitGym.jsonParse (
                match node.["Gym"] with
                | null ->
@@ -947,7 +937,7 @@ module Visit =
                | v -> v
            )

-        let Duration =
+        let arg_2 =
            (match node.["Duration"] with
             | null ->
                 raise (
@@ -959,7 +949,7 @@ module Visit =
                .AsValue()
                .GetValue<int> ()

-        let StartTime =
+        let arg_1 =
            (match node.["StartTime"] with
             | null ->
                 raise (
@@ -972,7 +962,7 @@ module Visit =
                .GetValue<string> ()
            |> System.DateTime.Parse

-        let IsDurationEstimated =
+        let arg_0 =
            (match node.["IsDurationEstimated"] with
             | null ->
                 raise (
@@ -985,20 +975,19 @@ module Visit =
                .GetValue<bool> ()

        {
-            IsDurationEstimated = IsDurationEstimated
-            StartTime = StartTime
-            Duration = Duration
-            Gym = Gym
+            IsDurationEstimated = arg_0
+            StartTime = arg_1
+            Duration = arg_2
+            Gym = arg_3
        }
 namespace PureGym

 /// Module containing JSON parsing methods for the SessionsSummary type
-[<RequireQualifiedAccess>]
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
+[<RequireQualifiedAccess ; CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
 module SessionsSummary =
    /// Parse from a JSON node.
    let jsonParse (node : System.Text.Json.Nodes.JsonNode) : SessionsSummary =
-        let ThisWeek =
+        let arg_1 =
            SessionsAggregate.jsonParse (
                match node.["ThisWeek"] with
                | null ->
@@ -1010,7 +999,7 @@ module SessionsSummary =
                | v -> v
            )

-        let Total =
+        let arg_0 =
            SessionsAggregate.jsonParse (
                match node.["Total"] with
                | null ->
@@ -1023,18 +1012,17 @@ module SessionsSummary =
            )

        {
-            Total = Total
-            ThisWeek = ThisWeek
+            Total = arg_0
+            ThisWeek = arg_1
        }
 namespace PureGym

 /// Module containing JSON parsing methods for the Sessions type
-[<RequireQualifiedAccess>]
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
+[<RequireQualifiedAccess ; CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
 module Sessions =
    /// Parse from a JSON node.
    let jsonParse (node : System.Text.Json.Nodes.JsonNode) : Sessions =
-        let Visits =
+        let arg_1 =
            (match node.["Visits"] with
             | null ->
                 raise (
@@ -1047,7 +1035,7 @@ module Sessions =
            |> Seq.map (fun elt -> Visit.jsonParse elt)
            |> List.ofSeq

-        let Summary =
+        let arg_0 =
            SessionsSummary.jsonParse (
                match node.["Summary"] with
                | null ->
@@ -1060,18 +1048,17 @@ module Sessions =
            )

        {
-            Summary = Summary
-            Visits = Visits
+            Summary = arg_0
+            Visits = arg_1
        }
 namespace PureGym

 /// Module containing JSON parsing methods for the UriThing type
-[<RequireQualifiedAccess>]
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
+[<RequireQualifiedAccess ; CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
 module UriThing =
    /// Parse from a JSON node.
    let jsonParse (node : System.Text.Json.Nodes.JsonNode) : UriThing =
-        let SomeUri =
+        let arg_0 =
            (match node.["someUri"] with
             | null ->
                 raise (
@@ -1085,5 +1072,5 @@ module UriThing =
            |> System.Uri

        {
-            SomeUri = SomeUri
+            SomeUri = arg_0
        }
--- a/ConsumePlugin/GeneratedRestClient.fs
+++ b/ConsumePlugin/GeneratedRestClient.fs
@@ -17,8 +17,7 @@ open System.Net.Http
 open RestEase

 /// Module for constructing a REST client.
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
-[<RequireQualifiedAccess>]
+[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix) ; RequireQualifiedAccess>]
 module PureGymApi =
    /// Create a REST client.
    let make (client : System.Net.Http.HttpClient) : IPureGymApi =
@@ -87,6 +86,40 @@ module PureGymApi =
                }
                |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))

+            member _.GetGymAttendance' (gymId : int, ct : CancellationToken option) =
+                async {
+                    let! ct = Async.CancellationToken
+
+                    let uri =
+                        System.Uri (
+                            (match client.BaseAddress with
+                             | null -> System.Uri "https://whatnot.com"
+                             | v -> v),
+                            System.Uri (
+                                "v1/gyms/{gym_id}/attendance"
+                                    .Replace ("{gym_id}", gymId.ToString () |> System.Web.HttpUtility.UrlEncode),
+                                System.UriKind.Relative
+                            )
+                        )
+
+                    let httpMessage =
+                        new System.Net.Http.HttpRequestMessage (
+                            Method = System.Net.Http.HttpMethod.Get,
+                            RequestUri = uri
+                        )
+
+                    let! response = client.SendAsync (httpMessage, ct) |> Async.AwaitTask
+                    let response = response.EnsureSuccessStatusCode ()
+                    let! responseStream = response.Content.ReadAsStreamAsync ct |> Async.AwaitTask
+
+                    let! jsonNode =
+                        System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
+                        |> Async.AwaitTask
+
+                    return GymAttendance.jsonParse jsonNode
+                }
+                |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
+
            member _.GetMember (ct : CancellationToken option) =
                async {
                    let! ct = Async.CancellationToken
@@ -288,7 +321,52 @@ module PureGymApi =
                             | v -> v),
                            System.Uri (
                                ("/v2/gymSessions/member"
-                                 + "?fromDate="
+                                 + (if "/v2/gymSessions/member".IndexOf (char 63) >= 0 then
+                                        "&"
+                                    else
+                                        "?")
+                                 + "fromDate="
+                                 + ((fromDate.ToString "yyyy-MM-dd") |> System.Web.HttpUtility.UrlEncode)
+                                 + "&toDate="
+                                 + ((toDate.ToString "yyyy-MM-dd") |> System.Web.HttpUtility.UrlEncode)),
+                                System.UriKind.Relative
+                            )
+                        )
+
+                    let httpMessage =
+                        new System.Net.Http.HttpRequestMessage (
+                            Method = System.Net.Http.HttpMethod.Get,
+                            RequestUri = uri
+                        )
+
+                    let! response = client.SendAsync (httpMessage, ct) |> Async.AwaitTask
+                    let response = response.EnsureSuccessStatusCode ()
+                    let! responseStream = response.Content.ReadAsStreamAsync ct |> Async.AwaitTask
+
+                    let! jsonNode =
+                        System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
+                        |> Async.AwaitTask
+
+                    return Sessions.jsonParse jsonNode
+                }
+                |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
+
+            member _.GetSessionsWithQuery (fromDate : DateOnly, toDate : DateOnly, ct : CancellationToken option) =
+                async {
+                    let! ct = Async.CancellationToken
+
+                    let uri =
+                        System.Uri (
+                            (match client.BaseAddress with
+                             | null -> System.Uri "https://whatnot.com"
+                             | v -> v),
+                            System.Uri (
+                                ("/v2/gymSessions/member?foo=1"
+                                 + (if "/v2/gymSessions/member?foo=1".IndexOf (char 63) >= 0 then
+                                        "&"
+                                    else
+                                        "?")
+                                 + "fromDate="
                                 + ((fromDate.ToString "yyyy-MM-dd") |> System.Web.HttpUtility.UrlEncode)
                                 + "&toDate="
                                 + ((toDate.ToString "yyyy-MM-dd") |> System.Web.HttpUtility.UrlEncode)),
@@ -976,8 +1054,7 @@ open System.Net.Http
 open RestEase

 /// Module for constructing a REST client.
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
-[<RequireQualifiedAccess>]
+[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix) ; RequireQualifiedAccess>]
 module internal ApiWithoutBaseAddress =
    /// Create a REST client.
    let make (client : System.Net.Http.HttpClient) : IApiWithoutBaseAddress =
@@ -1028,8 +1105,7 @@ open System.Net.Http
 open RestEase

 /// Module for constructing a REST client.
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
-[<RequireQualifiedAccess>]
+[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix) ; RequireQualifiedAccess>]
 module ApiWithBasePath =
    /// Create a REST client.
    let make (client : System.Net.Http.HttpClient) : IApiWithBasePath =
@@ -1080,8 +1156,7 @@ open System.Net.Http
 open RestEase

 /// Module for constructing a REST client.
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
-[<RequireQualifiedAccess>]
+[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix) ; RequireQualifiedAccess>]
 module ApiWithBasePathAndAddress =
    /// Create a REST client.
    let make (client : System.Net.Http.HttpClient) : IApiWithBasePathAndAddress =
@@ -1126,8 +1201,7 @@ open System.Net.Http
 open RestEase

 /// Module for constructing a REST client.
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
-[<RequireQualifiedAccess>]
+[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix) ; RequireQualifiedAccess>]
 module ApiWithHeaders =
    /// Create a REST client. The input functions will be re-evaluated on every HTTP request to obtain the required values for the corresponding header properties.
    let make
@@ -1140,6 +1214,68 @@ module ApiWithHeaders =
            member _.SomeHeader : string = someHeader ()
            member _.SomeOtherHeader : int = someOtherHeader ()

+            member this.GetPathParam (parameter : string, ct : CancellationToken option) =
+                async {
+                    let! ct = Async.CancellationToken
+
+                    let uri =
+                        System.Uri (
+                            (match client.BaseAddress with
+                             | null ->
+                                 raise (
+                                     System.ArgumentNullException (
+                                         nameof (client.BaseAddress),
+                                         "No base address was supplied on the type, and no BaseAddress was on the HttpClient."
+                                     )
+                                 )
+                             | v -> v),
+                            System.Uri (
+                                "endpoint/{param}"
+                                    .Replace ("{param}", parameter.ToString () |> System.Web.HttpUtility.UrlEncode),
+                                System.UriKind.Relative
+                            )
+                        )
+
+                    let httpMessage =
+                        new System.Net.Http.HttpRequestMessage (
+                            Method = System.Net.Http.HttpMethod.Get,
+                            RequestUri = uri
+                        )
+
+                    do httpMessage.Headers.Add ("X-Foo", this.SomeHeader.ToString ())
+                    do httpMessage.Headers.Add ("Authorization", this.SomeOtherHeader.ToString ())
+                    do httpMessage.Headers.Add ("Header-Name", "Header-Value")
+                    let! response = client.SendAsync (httpMessage, ct) |> Async.AwaitTask
+                    let response = response.EnsureSuccessStatusCode ()
+                    let! responseString = response.Content.ReadAsStringAsync ct |> Async.AwaitTask
+                    return responseString
+                }
+                |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
+        }
+namespace PureGym
+
+open System
+open System.Threading
+open System.Threading.Tasks
+open System.IO
+open System.Net
+open System.Net.Http
+open RestEase
+
+/// Module for constructing a REST client.
+[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix) ; RequireQualifiedAccess>]
+module ApiWithHeaders2 =
+    /// Create a REST client. The input functions will be re-evaluated on every HTTP request to obtain the required values for the corresponding header properties.
+    let make
+        (someHeader : unit -> string)
+        (someOtherHeader : unit -> int)
+        (client : System.Net.Http.HttpClient)
+        : IApiWithHeaders2
+        =
+        { new IApiWithHeaders2 with
+            member _.SomeHeader : string = someHeader ()
+            member _.SomeOtherHeader : int = someOtherHeader ()
+
            member this.GetPathParam (parameter : string, ct : CancellationToken option) =
                async {
                    let! ct = Async.CancellationToken
--- a/ConsumePlugin/GeneratedSerde.fs
+++ b/ConsumePlugin/GeneratedSerde.fs
@@ -149,6 +149,37 @@ module JsonRecordTypeWithBothJsonSerializeExtension =
                )

            node :> _
+namespace ConsumePlugin
+
+open System
+open System.Collections.Generic
+open System.Text.Json.Serialization
+
+/// Module containing JSON serializing extension members for the FirstDu type
+[<AutoOpen>]
+module FirstDuJsonSerializeExtension =
+    /// Extension methods for JSON parsing
+    type FirstDu with
+
+        /// Serialize to a JSON node
+        static member toJsonNode (input : FirstDu) : System.Text.Json.Nodes.JsonNode =
+            let node = System.Text.Json.Nodes.JsonObject ()
+
+            match input with
+            | FirstDu.EmptyCase -> node.Add ("type", System.Text.Json.Nodes.JsonValue.Create "emptyCase")
+            | FirstDu.Case1 (arg0) ->
+                node.Add ("type", System.Text.Json.Nodes.JsonValue.Create "case1")
+                let dataNode = System.Text.Json.Nodes.JsonObject ()
+                dataNode.Add ("data", System.Text.Json.Nodes.JsonValue.Create<string> arg0)
+                node.Add ("data", dataNode)
+            | FirstDu.Case2 (arg0, arg1) ->
+                node.Add ("type", System.Text.Json.Nodes.JsonValue.Create "case2")
+                let dataNode = System.Text.Json.Nodes.JsonObject ()
+                dataNode.Add ("record", JsonRecordTypeWithBoth.toJsonNode arg0)
+                dataNode.Add ("i", System.Text.Json.Nodes.JsonValue.Create<int> arg1)
+                node.Add ("data", dataNode)
+
+            node :> _

 namespace ConsumePlugin

@@ -160,7 +191,7 @@ module InnerTypeWithBothJsonParseExtension =

        /// Parse from a JSON node.
        static member jsonParse (node : System.Text.Json.Nodes.JsonNode) : InnerTypeWithBoth =
-            let ConcreteDict =
+            let arg_4 =
                (match node.["concreteDict"] with
                 | null ->
                     raise (
@@ -178,7 +209,7 @@ module InnerTypeWithBothJsonParseExtension =
                |> Seq.map System.Collections.Generic.KeyValuePair
                |> System.Collections.Generic.Dictionary

-            let Dict =
+            let arg_3 =
                (match node.["dict"] with
                 | null ->
                     raise (
@@ -195,7 +226,7 @@ module InnerTypeWithBothJsonParseExtension =
                )
                |> dict

-            let ReadOnlyDict =
+            let arg_2 =
                (match node.["readOnlyDict"] with
                 | null ->
                     raise (
@@ -210,14 +241,14 @@ module InnerTypeWithBothJsonParseExtension =

                    let value =
                        (kvp.Value).AsArray ()
-                        |> Seq.map (fun elt -> elt.AsValue().GetValue<char> ())
+                        |> Seq.map (fun elt -> elt.AsValue().GetValue<System.Char> ())
                        |> List.ofSeq

                    key, value
                )
                |> readOnlyDict

-            let Map =
+            let arg_1 =
                (match node.["map"] with
                 | null ->
                     raise (
@@ -234,7 +265,7 @@ module InnerTypeWithBothJsonParseExtension =
                )
                |> Map.ofSeq

-            let Thing =
+            let arg_0 =
                (match node.[("it's-a-me")] with
                 | null ->
                     raise (
@@ -248,11 +279,11 @@ module InnerTypeWithBothJsonParseExtension =
                |> System.Guid.Parse

            {
-                Thing = Thing
-                Map = Map
-                ReadOnlyDict = ReadOnlyDict
-                Dict = Dict
-                ConcreteDict = ConcreteDict
+                Thing = arg_0
+                Map = arg_1
+                ReadOnlyDict = arg_2
+                Dict = arg_3
+                ConcreteDict = arg_4
            }
 namespace ConsumePlugin

@@ -264,7 +295,7 @@ module JsonRecordTypeWithBothJsonParseExtension =

        /// Parse from a JSON node.
        static member jsonParse (node : System.Text.Json.Nodes.JsonNode) : JsonRecordTypeWithBoth =
-            let F =
+            let arg_5 =
                (match node.["f"] with
                 | null ->
                     raise (
@@ -277,7 +308,7 @@ module JsonRecordTypeWithBothJsonParseExtension =
                |> Seq.map (fun elt -> elt.AsValue().GetValue<int> ())
                |> Array.ofSeq

-            let E =
+            let arg_4 =
                (match node.["e"] with
                 | null ->
                     raise (
@@ -290,7 +321,7 @@ module JsonRecordTypeWithBothJsonParseExtension =
                |> Seq.map (fun elt -> elt.AsValue().GetValue<string> ())
                |> Array.ofSeq

-            let D =
+            let arg_3 =
                InnerTypeWithBoth.jsonParse (
                    match node.["d"] with
                    | null ->
@@ -302,7 +333,7 @@ module JsonRecordTypeWithBothJsonParseExtension =
                    | v -> v
                )

-            let C =
+            let arg_2 =
                (match node.["c"] with
                 | null ->
                     raise (
@@ -315,7 +346,7 @@ module JsonRecordTypeWithBothJsonParseExtension =
                |> Seq.map (fun elt -> elt.AsValue().GetValue<int> ())
                |> List.ofSeq

-            let B =
+            let arg_1 =
                (match node.["b"] with
                 | null ->
                     raise (
@@ -327,7 +358,7 @@ module JsonRecordTypeWithBothJsonParseExtension =
                    .AsValue()
                    .GetValue<string> ()

-            let A =
+            let arg_0 =
                (match node.["a"] with
                 | null ->
                     raise (
@@ -340,10 +371,90 @@ module JsonRecordTypeWithBothJsonParseExtension =
                    .GetValue<int> ()

            {
-                A = A
-                B = B
-                C = C
-                D = D
-                E = E
-                F = F
+                A = arg_0
+                B = arg_1
+                C = arg_2
+                D = arg_3
+                E = arg_4
+                F = arg_5
            }
+namespace ConsumePlugin
+
+/// Module containing JSON parsing extension members for the FirstDu type
+[<AutoOpen>]
+module FirstDuJsonParseExtension =
+    /// Extension methods for JSON parsing
+    type FirstDu with
+
+        /// Parse from a JSON node.
+        static member jsonParse (node : System.Text.Json.Nodes.JsonNode) : FirstDu =
+            let ty =
+                (match node.["type"] with
+                 | null ->
+                     raise (
+                         System.Collections.Generic.KeyNotFoundException (
+                             sprintf "Required key '%s' not found on JSON object" ("type")
+                         )
+                     )
+                 | v -> v)
+                |> (fun v -> v.GetValue<string> ())
+
+            match ty with
+            | "emptyCase" -> FirstDu.EmptyCase
+            | "case1" ->
+                let node =
+                    (match node.["data"] with
+                     | null ->
+                         raise (
+                             System.Collections.Generic.KeyNotFoundException (
+                                 sprintf "Required key '%s' not found on JSON object" ("data")
+                             )
+                         )
+                     | v -> v)
+
+                FirstDu.Case1 (
+                    (match node.["data"] with
+                     | null ->
+                         raise (
+                             System.Collections.Generic.KeyNotFoundException (
+                                 sprintf "Required key '%s' not found on JSON object" ("data")
+                             )
+                         )
+                     | v -> v)
+                        .AsValue()
+                        .GetValue<string> ()
+                )
+            | "case2" ->
+                let node =
+                    (match node.["data"] with
+                     | null ->
+                         raise (
+                             System.Collections.Generic.KeyNotFoundException (
+                                 sprintf "Required key '%s' not found on JSON object" ("data")
+                             )
+                         )
+                     | v -> v)
+
+                FirstDu.Case2 (
+                    JsonRecordTypeWithBoth.jsonParse (
+                        match node.["record"] with
+                        | null ->
+                            raise (
+                                System.Collections.Generic.KeyNotFoundException (
+                                    sprintf "Required key '%s' not found on JSON object" ("record")
+                                )
+                            )
+                        | v -> v
+                    ),
+                    (match node.["i"] with
+                     | null ->
+                         raise (
+                             System.Collections.Generic.KeyNotFoundException (
+                                 sprintf "Required key '%s' not found on JSON object" ("i")
+                             )
+                         )
+                     | v -> v)
+                        .AsValue()
+                        .GetValue<int> ()
+                )
+            | v -> failwith ("Unrecognised 'type' field value: " + v)
--- a/ConsumePlugin/GeneratedVault.fs
+++ b/ConsumePlugin/GeneratedVault.fs
@@ -8,12 +8,11 @@
 namespace ConsumePlugin

 /// Module containing JSON parsing methods for the JwtVaultAuthResponse type
-[<RequireQualifiedAccess>]
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
+[<RequireQualifiedAccess ; CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
 module JwtVaultAuthResponse =
    /// Parse from a JSON node.
    let jsonParse (node : System.Text.Json.Nodes.JsonNode) : JwtVaultAuthResponse =
-        let NumUses =
+        let arg_10 =
            (match node.["num_uses"] with
             | null ->
                 raise (
@@ -25,7 +24,7 @@ module JwtVaultAuthResponse =
                .AsValue()
                .GetValue<int> ()

-        let Orphan =
+        let arg_9 =
            (match node.["orphan"] with
             | null ->
                 raise (
@@ -37,7 +36,7 @@ module JwtVaultAuthResponse =
                .AsValue()
                .GetValue<bool> ()

-        let EntityId =
+        let arg_8 =
            (match node.["entity_id"] with
             | null ->
                 raise (
@@ -49,7 +48,7 @@ module JwtVaultAuthResponse =
                .AsValue()
                .GetValue<string> ()

-        let TokenType =
+        let arg_7 =
            (match node.["token_type"] with
             | null ->
                 raise (
@@ -61,7 +60,7 @@ module JwtVaultAuthResponse =
                .AsValue()
                .GetValue<string> ()

-        let Renewable =
+        let arg_6 =
            (match node.["renewable"] with
             | null ->
                 raise (
@@ -73,7 +72,7 @@ module JwtVaultAuthResponse =
                .AsValue()
                .GetValue<bool> ()

-        let LeaseDuration =
+        let arg_5 =
            (match node.["lease_duration"] with
             | null ->
                 raise (
@@ -85,7 +84,7 @@ module JwtVaultAuthResponse =
                .AsValue()
                .GetValue<int> ()

-        let IdentityPolicies =
+        let arg_4 =
            (match node.["identity_policies"] with
             | null ->
                 raise (
@@ -98,7 +97,7 @@ module JwtVaultAuthResponse =
            |> Seq.map (fun elt -> elt.AsValue().GetValue<string> ())
            |> List.ofSeq

-        let TokenPolicies =
+        let arg_3 =
            (match node.["token_policies"] with
             | null ->
                 raise (
@@ -111,7 +110,7 @@ module JwtVaultAuthResponse =
            |> Seq.map (fun elt -> elt.AsValue().GetValue<string> ())
            |> List.ofSeq

-        let Policies =
+        let arg_2 =
            (match node.["policies"] with
             | null ->
                 raise (
@@ -124,7 +123,7 @@ module JwtVaultAuthResponse =
            |> Seq.map (fun elt -> elt.AsValue().GetValue<string> ())
            |> List.ofSeq

-        let Accessor =
+        let arg_1 =
            (match node.["accessor"] with
             | null ->
                 raise (
@@ -136,7 +135,7 @@ module JwtVaultAuthResponse =
                .AsValue()
                .GetValue<string> ()

-        let ClientToken =
+        let arg_0 =
            (match node.["client_token"] with
             | null ->
                 raise (
@@ -149,27 +148,26 @@ module JwtVaultAuthResponse =
                .GetValue<string> ()

        {
-            ClientToken = ClientToken
-            Accessor = Accessor
-            Policies = Policies
-            TokenPolicies = TokenPolicies
-            IdentityPolicies = IdentityPolicies
-            LeaseDuration = LeaseDuration
-            Renewable = Renewable
-            TokenType = TokenType
-            EntityId = EntityId
-            Orphan = Orphan
-            NumUses = NumUses
+            ClientToken = arg_0
+            Accessor = arg_1
+            Policies = arg_2
+            TokenPolicies = arg_3
+            IdentityPolicies = arg_4
+            LeaseDuration = arg_5
+            Renewable = arg_6
+            TokenType = arg_7
+            EntityId = arg_8
+            Orphan = arg_9
+            NumUses = arg_10
        }
 namespace ConsumePlugin

 /// Module containing JSON parsing methods for the JwtVaultResponse type
-[<RequireQualifiedAccess>]
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
+[<RequireQualifiedAccess ; CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
 module JwtVaultResponse =
    /// Parse from a JSON node.
    let jsonParse (node : System.Text.Json.Nodes.JsonNode) : JwtVaultResponse =
-        let Auth =
+        let arg_4 =
            JwtVaultAuthResponse.jsonParse (
                match node.["auth"] with
                | null ->
@@ -181,7 +179,7 @@ module JwtVaultResponse =
                | v -> v
            )

-        let LeaseDuration =
+        let arg_3 =
            (match node.["lease_duration"] with
             | null ->
                 raise (
@@ -193,7 +191,7 @@ module JwtVaultResponse =
                .AsValue()
                .GetValue<int> ()

-        let Renewable =
+        let arg_2 =
            (match node.["renewable"] with
             | null ->
                 raise (
@@ -205,7 +203,7 @@ module JwtVaultResponse =
                .AsValue()
                .GetValue<bool> ()

-        let LeaseId =
+        let arg_1 =
            (match node.["lease_id"] with
             | null ->
                 raise (
@@ -217,7 +215,7 @@ module JwtVaultResponse =
                .AsValue()
                .GetValue<string> ()

-        let RequestId =
+        let arg_0 =
            (match node.["request_id"] with
             | null ->
                 raise (
@@ -230,21 +228,20 @@ module JwtVaultResponse =
                .GetValue<string> ()

        {
-            RequestId = RequestId
-            LeaseId = LeaseId
-            Renewable = Renewable
-            LeaseDuration = LeaseDuration
-            Auth = Auth
+            RequestId = arg_0
+            LeaseId = arg_1
+            Renewable = arg_2
+            LeaseDuration = arg_3
+            Auth = arg_4
        }
 namespace ConsumePlugin

 /// Module containing JSON parsing methods for the JwtSecretResponse type
-[<RequireQualifiedAccess>]
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
+[<RequireQualifiedAccess ; CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
 module JwtSecretResponse =
    /// Parse from a JSON node.
    let jsonParse (node : System.Text.Json.Nodes.JsonNode) : JwtSecretResponse =
-        let Data8 =
+        let arg_11 =
            (match node.["data8"] with
             | null ->
                 raise (
@@ -262,7 +259,7 @@ module JwtSecretResponse =
            |> Seq.map System.Collections.Generic.KeyValuePair
            |> System.Collections.Generic.Dictionary

-        let Data7 =
+        let arg_10 =
            (match node.["data7"] with
             | null ->
                 raise (
@@ -279,7 +276,7 @@ module JwtSecretResponse =
            )
            |> Map.ofSeq

-        let Data6 =
+        let arg_9 =
            (match node.["data6"] with
             | null ->
                 raise (
@@ -296,7 +293,7 @@ module JwtSecretResponse =
            )
            |> dict

-        let Data5 =
+        let arg_8 =
            (match node.["data5"] with
             | null ->
                 raise (
@@ -313,7 +310,7 @@ module JwtSecretResponse =
            )
            |> readOnlyDict

-        let Data4 =
+        let arg_7 =
            (match node.["data4"] with
             | null ->
                 raise (
@@ -330,7 +327,7 @@ module JwtSecretResponse =
            )
            |> Map.ofSeq

-        let Data3 =
+        let arg_6 =
            (match node.["data3"] with
             | null ->
                 raise (
@@ -348,7 +345,7 @@ module JwtSecretResponse =
            |> Seq.map System.Collections.Generic.KeyValuePair
            |> System.Collections.Generic.Dictionary

-        let Data2 =
+        let arg_5 =
            (match node.["data2"] with
             | null ->
                 raise (
@@ -365,7 +362,7 @@ module JwtSecretResponse =
            )
            |> dict

-        let Data =
+        let arg_4 =
            (match node.["data"] with
             | null ->
                 raise (
@@ -382,7 +379,7 @@ module JwtSecretResponse =
            )
            |> readOnlyDict

-        let LeaseDuration =
+        let arg_3 =
            (match node.["lease_duration"] with
             | null ->
                 raise (
@@ -394,7 +391,7 @@ module JwtSecretResponse =
                .AsValue()
                .GetValue<int> ()

-        let Renewable =
+        let arg_2 =
            (match node.["renewable"] with
             | null ->
                 raise (
@@ -406,7 +403,7 @@ module JwtSecretResponse =
                .AsValue()
                .GetValue<bool> ()

-        let LeaseId =
+        let arg_1 =
            (match node.["lease_id"] with
             | null ->
                 raise (
@@ -418,7 +415,7 @@ module JwtSecretResponse =
                .AsValue()
                .GetValue<string> ()

-        let RequestId =
+        let arg_0 =
            (match node.["request_id"] with
             | null ->
                 raise (
@@ -431,18 +428,18 @@ module JwtSecretResponse =
                .GetValue<string> ()

        {
-            RequestId = RequestId
-            LeaseId = LeaseId
-            Renewable = Renewable
-            LeaseDuration = LeaseDuration
-            Data = Data
-            Data2 = Data2
-            Data3 = Data3
-            Data4 = Data4
-            Data5 = Data5
-            Data6 = Data6
-            Data7 = Data7
-            Data8 = Data8
+            RequestId = arg_0
+            LeaseId = arg_1
+            Renewable = arg_2
+            LeaseDuration = arg_3
+            Data = arg_4
+            Data2 = arg_5
+            Data3 = arg_6
+            Data4 = arg_7
+            Data5 = arg_8
+            Data6 = arg_9
+            Data7 = arg_10
+            Data8 = arg_11
        }

 namespace ConsumePlugin
@@ -455,8 +452,7 @@ open System.Threading.Tasks
 open RestEase

 /// Module for constructing a REST client.
-[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
-[<RequireQualifiedAccess>]
+[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix) ; RequireQualifiedAccess>]
 module VaultClient =
    /// Create a REST client.
    let make (client : System.Net.Http.HttpClient) : IVaultClient =
@@ -543,3 +539,200 @@ module VaultClient =
                }
                |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
        }
+namespace ConsumePlugin
+
+open System
+open System.Collections.Generic
+open System.Text.Json.Serialization
+open System.Threading
+open System.Threading.Tasks
+open RestEase
+
+/// Module for constructing a REST client.
+[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix) ; RequireQualifiedAccess>]
+module VaultClientNonExtensionMethod =
+    /// Create a REST client.
+    let make (client : System.Net.Http.HttpClient) : IVaultClientNonExtensionMethod =
+        { new IVaultClientNonExtensionMethod with
+            member _.GetSecret
+                (jwt : JwtVaultResponse, path : string, mountPoint : string, ct : CancellationToken option)
+                =
+                async {
+                    let! ct = Async.CancellationToken
+
+                    let uri =
+                        System.Uri (
+                            (match client.BaseAddress with
+                             | null ->
+                                 raise (
+                                     System.ArgumentNullException (
+                                         nameof (client.BaseAddress),
+                                         "No base address was supplied on the type, and no BaseAddress was on the HttpClient."
+                                     )
+                                 )
+                             | v -> v),
+                            System.Uri (
+                                "v1/{mountPoint}/{path}"
+                                    .Replace("{path}", path.ToString () |> System.Web.HttpUtility.UrlEncode)
+                                    .Replace (
+                                        "{mountPoint}",
+                                        mountPoint.ToString () |> System.Web.HttpUtility.UrlEncode
+                                    ),
+                                System.UriKind.Relative
+                            )
+                        )
+
+                    let httpMessage =
+                        new System.Net.Http.HttpRequestMessage (
+                            Method = System.Net.Http.HttpMethod.Get,
+                            RequestUri = uri
+                        )
+
+                    let! response = client.SendAsync (httpMessage, ct) |> Async.AwaitTask
+                    let response = response.EnsureSuccessStatusCode ()
+                    let! responseStream = response.Content.ReadAsStreamAsync ct |> Async.AwaitTask
+
+                    let! jsonNode =
+                        System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
+                        |> Async.AwaitTask
+
+                    return JwtSecretResponse.jsonParse jsonNode
+                }
+                |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
+
+            member _.GetJwt (role : string, jwt : string, ct : CancellationToken option) =
+                async {
+                    let! ct = Async.CancellationToken
+
+                    let uri =
+                        System.Uri (
+                            (match client.BaseAddress with
+                             | null ->
+                                 raise (
+                                     System.ArgumentNullException (
+                                         nameof (client.BaseAddress),
+                                         "No base address was supplied on the type, and no BaseAddress was on the HttpClient."
+                                     )
+                                 )
+                             | v -> v),
+                            System.Uri ("v1/auth/jwt/login", System.UriKind.Relative)
+                        )
+
+                    let httpMessage =
+                        new System.Net.Http.HttpRequestMessage (
+                            Method = System.Net.Http.HttpMethod.Get,
+                            RequestUri = uri
+                        )
+
+                    let! response = client.SendAsync (httpMessage, ct) |> Async.AwaitTask
+                    let response = response.EnsureSuccessStatusCode ()
+                    let! responseStream = response.Content.ReadAsStreamAsync ct |> Async.AwaitTask
+
+                    let! jsonNode =
+                        System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
+                        |> Async.AwaitTask
+
+                    return JwtVaultResponse.jsonParse jsonNode
+                }
+                |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
+        }
+namespace ConsumePlugin
+
+open System
+open System.Collections.Generic
+open System.Text.Json.Serialization
+open System.Threading
+open System.Threading.Tasks
+open RestEase
+
+/// Extension methods for constructing a REST client.
+[<AutoOpen>]
+module VaultClientExtensionMethodHttpClientExtension =
+    /// Extension methods for HTTP clients
+    type VaultClientExtensionMethod with
+
+        /// Create a REST client.
+        static member make (client : System.Net.Http.HttpClient) : IVaultClientExtensionMethod =
+            { new IVaultClientExtensionMethod with
+                member _.GetSecret
+                    (jwt : JwtVaultResponse, path : string, mountPoint : string, ct : CancellationToken option)
+                    =
+                    async {
+                        let! ct = Async.CancellationToken
+
+                        let uri =
+                            System.Uri (
+                                (match client.BaseAddress with
+                                 | null ->
+                                     raise (
+                                         System.ArgumentNullException (
+                                             nameof (client.BaseAddress),
+                                             "No base address was supplied on the type, and no BaseAddress was on the HttpClient."
+                                         )
+                                     )
+                                 | v -> v),
+                                System.Uri (
+                                    "v1/{mountPoint}/{path}"
+                                        .Replace("{path}", path.ToString () |> System.Web.HttpUtility.UrlEncode)
+                                        .Replace (
+                                            "{mountPoint}",
+                                            mountPoint.ToString () |> System.Web.HttpUtility.UrlEncode
+                                        ),
+                                    System.UriKind.Relative
+                                )
+                            )
+
+                        let httpMessage =
+                            new System.Net.Http.HttpRequestMessage (
+                                Method = System.Net.Http.HttpMethod.Get,
+                                RequestUri = uri
+                            )
+
+                        let! response = client.SendAsync (httpMessage, ct) |> Async.AwaitTask
+                        let response = response.EnsureSuccessStatusCode ()
+                        let! responseStream = response.Content.ReadAsStreamAsync ct |> Async.AwaitTask
+
+                        let! jsonNode =
+                            System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
+                            |> Async.AwaitTask
+
+                        return JwtSecretResponse.jsonParse jsonNode
+                    }
+                    |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
+
+                member _.GetJwt (role : string, jwt : string, ct : CancellationToken option) =
+                    async {
+                        let! ct = Async.CancellationToken
+
+                        let uri =
+                            System.Uri (
+                                (match client.BaseAddress with
+                                 | null ->
+                                     raise (
+                                         System.ArgumentNullException (
+                                             nameof (client.BaseAddress),
+                                             "No base address was supplied on the type, and no BaseAddress was on the HttpClient."
+                                         )
+                                     )
+                                 | v -> v),
+                                System.Uri ("v1/auth/jwt/login", System.UriKind.Relative)
+                            )
+
+                        let httpMessage =
+                            new System.Net.Http.HttpRequestMessage (
+                                Method = System.Net.Http.HttpMethod.Get,
+                                RequestUri = uri
+                            )
+
+                        let! response = client.SendAsync (httpMessage, ct) |> Async.AwaitTask
+                        let response = response.EnsureSuccessStatusCode ()
+                        let! responseStream = response.Content.ReadAsStreamAsync ct |> Async.AwaitTask
+
+                        let! jsonNode =
+                            System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
+                            |> Async.AwaitTask
+
+                        return JwtVaultResponse.jsonParse jsonNode
+                    }
+                    |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
+            }
--- a/ConsumePlugin/JsonRecord.fs
+++ b/ConsumePlugin/JsonRecord.fs
@@ -32,10 +32,27 @@ type JsonRecordType =
 [<WoofWare.Myriad.Plugins.JsonParse true>]
 type ToGetExtensionMethod =
    {
-        Tinker : string
-        Tailor : int
-        Soldier : System.Uri
-        Sailor : float
+        Alpha : string
+        Bravo : System.Uri
+        Charlie : float
+        Delta : float32
+        Echo : single
+        Foxtrot : double
+        Golf : int64
+        Hotel : uint64
+        India : int
+        Juliette : uint
+        Kilo : int32
+        Lima : uint32
+        Mike : int16
+        November : uint16
+        Oscar : int8
+        Papa : uint8
+        Quebec : byte
+        Tango : sbyte
+        Uniform : decimal
+        Victor : char
+        Whiskey : bigint
    }

 [<RequireQualifiedAccess>]
--- a/ConsumePlugin/List.fs
+++ b/ConsumePlugin/List.fs
@@ -0,0 +1,19 @@
+namespace ConsumePlugin
+
+open WoofWare.Myriad.Plugins
+
+[<CreateCatamorphism "MyListCata">]
+type MyList<'a> =
+    | Nil
+    | Cons of ConsCase<'a>
+
+and ConsCase<'a> =
+    {
+        Head : 'a
+        Tail : MyList<'a>
+    }
+
+[<CreateCatamorphism "MyList2Cata">]
+type MyList2<'a> =
+    | Nil
+    | Cons of 'a * MyList2<'a>
--- a/ConsumePlugin/ListCata.fs
+++ b/ConsumePlugin/ListCata.fs
@@ -0,0 +1,118 @@
+//------------------------------------------------------------------------------
+//        This code was generated by myriad.
+//        Changes to this file will be lost when the code is regenerated.
+//------------------------------------------------------------------------------
+
+
+
+
+
+namespace ConsumePlugin
+
+open WoofWare.Myriad.Plugins
+
+/// Description of how to combine cases during a fold
+type MyListCataCase<'a, 'MyList> =
+    /// How to operate on the Nil case
+    abstract Nil : 'MyList
+    /// How to operate on the Cons case
+    abstract Cons : head : 'a -> tail : 'MyList -> 'MyList
+
+/// Specifies how to perform a fold (catamorphism) over the type MyList and its friends.
+type MyListCata<'a, 'MyList> =
+    {
+        /// How to perform a fold (catamorphism) over the type MyList
+        MyList : MyListCataCase<'a, 'MyList>
+    }
+
+/// Methods to perform a catamorphism over the type MyList
+[<RequireQualifiedAccess>]
+module MyListCata =
+    [<RequireQualifiedAccess>]
+    type private Instruction<'a> =
+        | Process__MyList of MyList<'a>
+        | MyList_Cons of 'a
+
+    let private loop (cata : MyListCata<'a, 'MyList>) (instructions : ResizeArray<Instruction<'a>>) =
+        let myListStack = ResizeArray<'MyList> ()
+
+        while instructions.Count > 0 do
+            let currentInstruction = instructions.[instructions.Count - 1]
+            instructions.RemoveAt (instructions.Count - 1)
+
+            match currentInstruction with
+            | Instruction.Process__MyList (x) ->
+                match x with
+                | MyList.Nil -> cata.MyList.Nil |> myListStack.Add
+                | MyList.Cons ({
+                                   Head = head
+                                   Tail = tail
+                               }) ->
+                    instructions.Add (Instruction.MyList_Cons (head))
+                    instructions.Add (Instruction.Process__MyList tail)
+            | Instruction.MyList_Cons (head) ->
+                let tail = myListStack.[myListStack.Count - 1]
+                myListStack.RemoveAt (myListStack.Count - 1)
+                cata.MyList.Cons head tail |> myListStack.Add
+
+        myListStack
+
+    /// Execute the catamorphism.
+    let runMyList (cata : MyListCata<'a, 'MyListRet>) (x : MyList<'a>) : 'MyListRet =
+        let instructions = ResizeArray ()
+        instructions.Add (Instruction.Process__MyList x)
+        let myListRetStack = loop cata instructions
+        Seq.exactlyOne myListRetStack
+namespace ConsumePlugin
+
+open WoofWare.Myriad.Plugins
+
+/// Description of how to combine cases during a fold
+type MyList2CataCase<'a, 'MyList2> =
+    /// How to operate on the Nil case
+    abstract Nil : 'MyList2
+    /// How to operate on the Cons case
+    abstract Cons : 'a -> 'MyList2 -> 'MyList2
+
+/// Specifies how to perform a fold (catamorphism) over the type MyList2 and its friends.
+type MyList2Cata<'a, 'MyList2> =
+    {
+        /// How to perform a fold (catamorphism) over the type MyList2
+        MyList2 : MyList2CataCase<'a, 'MyList2>
+    }
+
+/// Methods to perform a catamorphism over the type MyList2
+[<RequireQualifiedAccess>]
+module MyList2Cata =
+    [<RequireQualifiedAccess>]
+    type private Instruction<'a> =
+        | Process__MyList2 of MyList2<'a>
+        | MyList2_Cons of 'a
+
+    let private loop (cata : MyList2Cata<'a, 'MyList2>) (instructions : ResizeArray<Instruction<'a>>) =
+        let myList2Stack = ResizeArray<'MyList2> ()
+
+        while instructions.Count > 0 do
+            let currentInstruction = instructions.[instructions.Count - 1]
+            instructions.RemoveAt (instructions.Count - 1)
+
+            match currentInstruction with
+            | Instruction.Process__MyList2 (x) ->
+                match x with
+                | MyList2.Nil -> cata.MyList2.Nil |> myList2Stack.Add
+                | MyList2.Cons (arg0_0, arg1_0) ->
+                    instructions.Add (Instruction.MyList2_Cons (arg0_0))
+                    instructions.Add (Instruction.Process__MyList2 arg1_0)
+            | Instruction.MyList2_Cons (arg0_0) ->
+                let arg1_0 = myList2Stack.[myList2Stack.Count - 1]
+                myList2Stack.RemoveAt (myList2Stack.Count - 1)
+                cata.MyList2.Cons arg0_0 arg1_0 |> myList2Stack.Add
+
+        myList2Stack
+
+    /// Execute the catamorphism.
+    let runMyList2 (cata : MyList2Cata<'a, 'MyList2Ret>) (x : MyList2<'a>) : 'MyList2Ret =
+        let instructions = ResizeArray ()
+        instructions.Add (Instruction.Process__MyList2 x)
+        let myList2RetStack = loop cata instructions
+        Seq.exactlyOne myList2RetStack
--- a/ConsumePlugin/MockExample.fs
+++ b/ConsumePlugin/MockExample.fs
@@ -1,5 +1,6 @@
 namespace SomeNamespace

+open System
 open WoofWare.Myriad.Plugins

 [<GenerateMock>]
@@ -41,3 +42,9 @@ type Curried<'a> =
    abstract Mem4 : (int * string) -> ('a * int) -> string
    abstract Mem5 : x : int * string -> ('a * int) -> string
    abstract Mem6 : int * string -> y : 'a * int -> string
+
+[<GenerateMock>]
+type TypeWithInterface =
+    inherit IDisposable
+    abstract Mem1 : string option -> string[] Async
+    abstract Mem2 : unit -> string[] Async
--- a/ConsumePlugin/RestApiExample.fs
+++ b/ConsumePlugin/RestApiExample.fs
@@ -17,6 +17,9 @@ type IPureGymApi =
    [<Get "v1/gyms/{gym_id}/attendance">]
    abstract GetGymAttendance : [<Path "gym_id">] gymId : int * ?ct : CancellationToken -> Task<GymAttendance>

+    [<Get "v1/gyms/{gym_id}/attendance">]
+    abstract GetGymAttendance' : [<Path("gym_id")>] gymId : int * ?ct : CancellationToken -> Task<GymAttendance>
+
    [<RestEase.GetAttribute "v1/member">]
    abstract GetMember : ?ct : CancellationToken -> Member Task

@@ -38,6 +41,10 @@ type IPureGymApi =
    abstract GetSessions :
        [<Query>] fromDate : DateOnly * [<Query>] toDate : DateOnly * ?ct : CancellationToken -> Task<Sessions>

+    [<Get "/v2/gymSessions/member?foo=1">]
+    abstract GetSessionsWithQuery :
+        [<Query>] fromDate : DateOnly * [<Query>] toDate : DateOnly * ?ct : CancellationToken -> Task<Sessions>
+
    // An example from RestEase's own docs
    [<Post "users/new">]
    abstract CreateUserString : [<Body>] user : string * ?ct : CancellationToken -> Task<string>
@@ -120,7 +127,8 @@ type internal IApiWithoutBaseAddress =
 [<WoofWare.Myriad.Plugins.HttpClient>]
 [<BasePath "foo">]
 type IApiWithBasePath =
-    [<Get "endpoint/{param}">]
+    // Example where we use the bundled attributes rather than RestEase's
+    [<WoofWare.Myriad.Plugins.RestEase.Get "endpoint/{param}">]
    abstract GetPathParam : [<Path "param">] parameter : string * ?cancellationToken : CancellationToken -> Task<string>

 [<WoofWare.Myriad.Plugins.HttpClient>]
@@ -141,3 +149,16 @@ type IApiWithHeaders =

    [<Get "endpoint/{param}">]
    abstract GetPathParam : [<Path "param">] parameter : string * ?ct : CancellationToken -> Task<string>
+
+[<WoofWare.Myriad.Plugins.HttpClient>]
+[<WoofWare.Myriad.Plugins.RestEase.Header("Header-Name", "Header-Value")>]
+type IApiWithHeaders2 =
+    [<WoofWare.Myriad.Plugins.RestEase.Header "X-Foo">]
+    abstract SomeHeader : string
+
+    [<WoofWare.Myriad.Plugins.RestEase.Header "Authorization">]
+    abstract SomeOtherHeader : int
+
+    [<Get "endpoint/{param}">]
+    abstract GetPathParam :
+        [<WoofWare.Myriad.Plugins.RestEase.Path "param">] parameter : string * ?ct : CancellationToken -> Task<string>
--- a/ConsumePlugin/SerializationAndDeserialization.fs
+++ b/ConsumePlugin/SerializationAndDeserialization.fs
@@ -27,3 +27,10 @@ type JsonRecordTypeWithBoth =
        E : string array
        F : int[]
    }
+
+[<WoofWare.Myriad.Plugins.JsonSerialize true>]
+[<WoofWare.Myriad.Plugins.JsonParse true>]
+type FirstDu =
+    | EmptyCase
+    | Case1 of data : string
+    | Case2 of record : JsonRecordTypeWithBoth * i : int
--- a/ConsumePlugin/Vault.fs
+++ b/ConsumePlugin/Vault.fs
@@ -76,3 +76,33 @@ type IVaultClient =

    [<Get "v1/auth/jwt/login">]
    abstract GetJwt : role : string * jwt : string * ?ct : CancellationToken -> Task<JwtVaultResponse>
+
+[<WoofWare.Myriad.Plugins.HttpClient false>]
+type IVaultClientNonExtensionMethod =
+    [<Get "v1/{mountPoint}/{path}">]
+    abstract GetSecret :
+        jwt : JwtVaultResponse *
+        [<Path "path">] path : string *
+        [<Path "mountPoint">] mountPoint : string *
+        ?ct : CancellationToken ->
+            Task<JwtSecretResponse>
+
+    [<Get "v1/auth/jwt/login">]
+    abstract GetJwt : role : string * jwt : string * ?ct : CancellationToken -> Task<JwtVaultResponse>
+
+[<WoofWare.Myriad.Plugins.HttpClient(true)>]
+type IVaultClientExtensionMethod =
+    [<Get "v1/{mountPoint}/{path}">]
+    abstract GetSecret :
+        jwt : JwtVaultResponse *
+        [<Path "path">] path : string *
+        [<Path "mountPoint">] mountPoint : string *
+        ?ct : CancellationToken ->
+            Task<JwtSecretResponse>
+
+    [<Get "v1/auth/jwt/login">]
+    abstract GetJwt : role : string * jwt : string * ?ct : CancellationToken -> Task<JwtVaultResponse>
+
+[<RequireQualifiedAccess>]
+type VaultClientExtensionMethod =
+    static member thisClashes = 99
--- a/README.md
+++ b/README.md
@@ -143,6 +143,9 @@ module InnerTypeWithBoth =
        node
 ```

+Also includes an *opinionated* serializer for discriminated unions.
+(Any such serializer must be opinionated, because JSON does not natively model DUs.)
+
 As in `JsonParse`, you can optionally supply the boolean `true` to the attribute,
 which will cause Myriad to stamp out an extension method rather than a module with the same name as the type.

@@ -332,7 +335,7 @@ thereby allowing the programmer to use F#'s record-update syntax.
 Takes a collection of mutually recursive discriminated unions:

 ```fsharp
-[<CreateCatamorphism>]
+[<CreateCatamorphism "MyCata">]
 type Expr =
    | Const of Const
    | Pair of Expr * Expr * PairOpKind
@@ -356,7 +359,7 @@ type ExprBuilderCata<'Expr, 'ExprBuilder> =
    abstract Child : 'ExprBuilder -> 'ExprBuilder
    abstract Parent : 'Expr -> 'ExprBuilder

-type Cata<'Expr, 'ExprBuilder> =
+type MyCata<'Expr, 'ExprBuilder> =
    {
        Expr : ExprCata<'Expr, 'ExprBuilder>
        ExprBuilder : ExprBuilderCata<'Expr, 'ExprBuilder>
@@ -364,10 +367,10 @@ type Cata<'Expr, 'ExprBuilder> =

 [<RequireQualifiedAccess>]
 module ExprCata =
-    let runExpr (cata : Cata<'ExprRet, 'ExprBuilderRet>) (x : Expr) : 'ExprRet =
+    let runExpr (cata : MyCata<'ExprRet, 'ExprBuilderRet>) (x : Expr) : 'ExprRet =
        failwith "this is implemented"

-    let runExprBuilder (cata : Cata<'ExprRet, 'ExprBuilderRet>) (x : ExprBuilder) : 'ExprBuilderRet =
+    let runExprBuilder (cata : MyCata<'ExprRet, 'ExprBuilderRet>) (x : ExprBuilder) : 'ExprBuilderRet =
        failwith "this is implemented"
 ```

@@ -381,6 +384,10 @@ and then each time you only plug in what you want to do.
 * Mutually recursive DUs are supported (as in the example above).
  Every DU in a recursive `type Foo... and Bar...` knot will be given an appropriate cata, as long as any one of those DUs has the `[<CreateCatamorphism>]` attribute.
 * There is *limited* support for records and for lists.
+* There is *extremely brittle* support for generics in the DUs you are cata'ing over.
+  It is based on the names of the generic parameters, so you must ensure that generic parameters with the same name have the same meaning across the various cases in your recursive knot of DUs.
+  (If you overstep the bounds of what this generator can do, you will get compile-time errors, e.g. with generics being constrained to each other's values.)
+  See the [List tests](./WoofWare.Myriad.Plugins.Test/TestCataGenerator/TestMyList2.fs) for an example, where we re-implement `FSharpList<'a>`.

 ### Limitations

--- a/WoofWare.Myriad.Plugins.Attributes/Attributes.fs
+++ b/WoofWare.Myriad.Plugins.Attributes/Attributes.fs
@@ -60,8 +60,17 @@ type JsonParseAttribute (isExtensionMethod : bool) =
 /// generator should apply during build.
 /// This generator is intended to replicate much of the functionality of RestEase,
 /// i.e. to stamp out HTTP REST clients from interfaces defining the API.
-type HttpClientAttribute () =
+///
+/// If you supply isExtensionMethod = true, you will get extension methods.
+/// These can only be consumed from F#, but the benefit is that they don't use up the module name
+/// (since by default we create a module called "{TypeName}").
+type HttpClientAttribute (isExtensionMethod : bool) =
    inherit Attribute ()
+    /// The default value of `isExtensionMethod`, the optional argument to the HttpClientAttribute constructor.
+    static member DefaultIsExtensionMethod = false
+
+    /// Shorthand for the "isExtensionMethod = false" constructor; see documentation there for details.
+    new () = HttpClientAttribute HttpClientAttribute.DefaultIsExtensionMethod

 /// Attribute indicating a DU type to which the "create catamorphism" Myriad
 /// generator should apply during build.
--- a/WoofWare.Myriad.Plugins.Attributes/RestEase.fs
+++ b/WoofWare.Myriad.Plugins.Attributes/RestEase.fs
@@ -0,0 +1,63 @@
+namespace WoofWare.Myriad.Plugins
+
+open System
+
+/// Module containing duplicates of the supported RestEase attributes, in case you don't want
+/// to take a dependency on RestEase.
+[<RequireQualifiedAccess>]
+module RestEase =
+    /// Indicates that a method represents an HTTP Get query to the specified endpoint.
+    type GetAttribute (path : string) =
+        inherit Attribute ()
+
+    /// Indicates that a method represents an HTTP Post query to the specified endpoint.
+    type PostAttribute (path : string) =
+        inherit Attribute ()
+
+    /// Indicates that a method represents an HTTP Delete query to the specified endpoint.
+    type DeleteAttribute (path : string) =
+        inherit Attribute ()
+
+    /// Indicates that a method represents an HTTP Head query to the specified endpoint.
+    type HeadAttribute (path : string) =
+        inherit Attribute ()
+
+    /// Indicates that a method represents an HTTP Options query to the specified endpoint.
+    type OptionsAttribute (path : string) =
+        inherit Attribute ()
+
+    /// Indicates that a method represents an HTTP Put query to the specified endpoint.
+    type PutAttribute (path : string) =
+        inherit Attribute ()
+
+    /// Indicates that a method represents an HTTP Patch query to the specified endpoint.
+    type PatchAttribute (path : string) =
+        inherit Attribute ()
+
+    /// Indicates that a method represents an HTTP Trace query to the specified endpoint.
+    type TraceAttribute (path : string) =
+        inherit Attribute ()
+
+    /// Indicates that this argument to a method is interpolated into the HTTP request at runtime
+    /// by setting a query parameter (with the given name) to the value of the annotated argument.
+    type QueryAttribute (paramName : string) =
+        inherit Attribute ()
+
+    /// Indicates that this interface represents a REST client which accesses an API whose paths are
+    /// all relative to the given address.
+    type BaseAddressAttribute (addr : string) =
+        inherit Attribute ()
+
+    /// Indicates that this interface member causes the interface to set a header with the given name,
+    /// whose value is obtained whenever required by a fresh call to the interface member.
+    type HeaderAttribute (header : string, value : string option) =
+        inherit Attribute ()
+        new (header : string) = HeaderAttribute (header, None)
+        new (header : string, value : string) = HeaderAttribute (header, Some value)
+
+    /// Indicates that this argument to a method is interpolated into the request path at runtime
+    /// by writing it into the templated string that specifies the HTTP query e.g. in the `[<Get "/foo/{template}">]`.
+    type PathAttribute (path : string option) =
+        inherit Attribute ()
+        new (path : string) = PathAttribute (Some path)
+        new () = PathAttribute None
--- a/WoofWare.Myriad.Plugins.Attributes/SurfaceBaseline.txt
+++ b/WoofWare.Myriad.Plugins.Attributes/SurfaceBaseline.txt
@@ -6,7 +6,10 @@ WoofWare.Myriad.Plugins.GenerateMockAttribute..ctor [constructor]: unit
 WoofWare.Myriad.Plugins.GenerateMockAttribute.DefaultIsInternal [static property]: [read-only] bool
 WoofWare.Myriad.Plugins.GenerateMockAttribute.get_DefaultIsInternal [static method]: unit -> bool
 WoofWare.Myriad.Plugins.HttpClientAttribute inherit System.Attribute
+WoofWare.Myriad.Plugins.HttpClientAttribute..ctor [constructor]: bool
 WoofWare.Myriad.Plugins.HttpClientAttribute..ctor [constructor]: unit
+WoofWare.Myriad.Plugins.HttpClientAttribute.DefaultIsExtensionMethod [static property]: [read-only] bool
+WoofWare.Myriad.Plugins.HttpClientAttribute.get_DefaultIsExtensionMethod [static method]: unit -> bool
 WoofWare.Myriad.Plugins.JsonParseAttribute inherit System.Attribute
 WoofWare.Myriad.Plugins.JsonParseAttribute..ctor [constructor]: bool
 WoofWare.Myriad.Plugins.JsonParseAttribute..ctor [constructor]: unit
@@ -18,4 +21,33 @@ WoofWare.Myriad.Plugins.JsonSerializeAttribute..ctor [constructor]: unit
 WoofWare.Myriad.Plugins.JsonSerializeAttribute.DefaultIsExtensionMethod [static property]: [read-only] bool
 WoofWare.Myriad.Plugins.JsonSerializeAttribute.get_DefaultIsExtensionMethod [static method]: unit -> bool
 WoofWare.Myriad.Plugins.RemoveOptionsAttribute inherit System.Attribute
-WoofWare.Myriad.Plugins.RemoveOptionsAttribute..ctor [constructor]: unit
+WoofWare.Myriad.Plugins.RemoveOptionsAttribute..ctor [constructor]: unit
+WoofWare.Myriad.Plugins.RestEase inherit obj
+WoofWare.Myriad.Plugins.RestEase+BaseAddressAttribute inherit System.Attribute
+WoofWare.Myriad.Plugins.RestEase+BaseAddressAttribute..ctor [constructor]: string
+WoofWare.Myriad.Plugins.RestEase+DeleteAttribute inherit System.Attribute
+WoofWare.Myriad.Plugins.RestEase+DeleteAttribute..ctor [constructor]: string
+WoofWare.Myriad.Plugins.RestEase+GetAttribute inherit System.Attribute
+WoofWare.Myriad.Plugins.RestEase+GetAttribute..ctor [constructor]: string
+WoofWare.Myriad.Plugins.RestEase+HeadAttribute inherit System.Attribute
+WoofWare.Myriad.Plugins.RestEase+HeadAttribute..ctor [constructor]: string
+WoofWare.Myriad.Plugins.RestEase+HeaderAttribute inherit System.Attribute
+WoofWare.Myriad.Plugins.RestEase+HeaderAttribute..ctor [constructor]: (string, string option)
+WoofWare.Myriad.Plugins.RestEase+HeaderAttribute..ctor [constructor]: (string, string)
+WoofWare.Myriad.Plugins.RestEase+HeaderAttribute..ctor [constructor]: string
+WoofWare.Myriad.Plugins.RestEase+OptionsAttribute inherit System.Attribute
+WoofWare.Myriad.Plugins.RestEase+OptionsAttribute..ctor [constructor]: string
+WoofWare.Myriad.Plugins.RestEase+PatchAttribute inherit System.Attribute
+WoofWare.Myriad.Plugins.RestEase+PatchAttribute..ctor [constructor]: string
+WoofWare.Myriad.Plugins.RestEase+PathAttribute inherit System.Attribute
+WoofWare.Myriad.Plugins.RestEase+PathAttribute..ctor [constructor]: string
+WoofWare.Myriad.Plugins.RestEase+PathAttribute..ctor [constructor]: string option
+WoofWare.Myriad.Plugins.RestEase+PathAttribute..ctor [constructor]: unit
+WoofWare.Myriad.Plugins.RestEase+PostAttribute inherit System.Attribute
+WoofWare.Myriad.Plugins.RestEase+PostAttribute..ctor [constructor]: string
+WoofWare.Myriad.Plugins.RestEase+PutAttribute inherit System.Attribute
+WoofWare.Myriad.Plugins.RestEase+PutAttribute..ctor [constructor]: string
+WoofWare.Myriad.Plugins.RestEase+QueryAttribute inherit System.Attribute
+WoofWare.Myriad.Plugins.RestEase+QueryAttribute..ctor [constructor]: string
+WoofWare.Myriad.Plugins.RestEase+TraceAttribute inherit System.Attribute
+WoofWare.Myriad.Plugins.RestEase+TraceAttribute..ctor [constructor]: string
--- a/WoofWare.Myriad.Plugins.Attributes/Test/TestSurface.fs
+++ b/WoofWare.Myriad.Plugins.Attributes/Test/TestSurface.fs
@@ -11,11 +11,9 @@ module TestSurface =
    [<Test>]
    let ``Ensure API surface has not been modified`` () = ApiSurface.assertIdentical assembly

-    (*
    [<Test>]
    let ``Check version against remote`` () =
        MonotonicVersion.validate assembly "WoofWare.Myriad.Plugins.Attributes"
-    *)

    [<Test ; Explicit>]
    let ``Update API surface`` () =
--- a/WoofWare.Myriad.Plugins.Attributes/Test/WoofWare.Myriad.Plugins.Attributes.Test.fsproj
+++ b/WoofWare.Myriad.Plugins.Attributes/Test/WoofWare.Myriad.Plugins.Attributes.Test.fsproj
@@ -12,9 +12,9 @@
    </ItemGroup>

    <ItemGroup>
-        <PackageReference Include="ApiSurface" Version="4.0.28" />
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0"/>
-        <PackageReference Include="NUnit" Version="3.13.3"/>
+        <PackageReference Include="ApiSurface" Version="4.0.40" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0"/>
+        <PackageReference Include="NUnit" Version="4.1.0"/>
        <PackageReference Include="NUnit3TestAdapter" Version="4.5.0"/>
    </ItemGroup>

--- a/WoofWare.Myriad.Plugins.Attributes/WoofWare.Myriad.Plugins.Attributes.fsproj
+++ b/WoofWare.Myriad.Plugins.Attributes/WoofWare.Myriad.Plugins.Attributes.fsproj
@@ -19,6 +19,7 @@

  <ItemGroup>
    <Compile Include="Attributes.fs"/>
+    <Compile Include="RestEase.fs" />
    <EmbeddedResource Include="version.json"/>
    <EmbeddedResource Include="SurfaceBaseline.txt"/>
    <None Include="..\README.md">
--- a/WoofWare.Myriad.Plugins.Attributes/version.json
+++ b/WoofWare.Myriad.Plugins.Attributes/version.json
@@ -1,7 +1,15 @@
 {
-  "version": "2.2",
+  "version": "3.1",
  "publicReleaseRefSpec": [
    "^refs/heads/main$"
  ],
-  "pathFilters": null
+  "pathFilters": [
+    ":/README.md",
+    ":/LICENSE",
+    ":/WoofWare.Myriad.Plugins/logo.png",
+    ":/Directory.Build.props",
+    ":/global.json",
+    "./",
+    "^./Test"
+  ]
 }
--- a/WoofWare.Myriad.Plugins.Test/TestCataGenerator/TestCataGenerator.fs
+++ b/WoofWare.Myriad.Plugins.Test/TestCataGenerator/TestCataGenerator.fs
@@ -8,17 +8,17 @@ open FsCheck

 [<TestFixture>]
 module TestCataGenerator =
-    let idCata : TreeCata<_, _> =
+    let idCata<'a, 'b> : TreeCata<'a, 'b, _, _> =
        {
            Tree =
-                { new TreeCataCase<_, _> with
-                    member _.Const x = Const x
+                { new TreeCataCase<_, _, _, _> with
+                    member _.Const x y = Const (x, y)
                    member _.Pair x y z = Pair (x, y, z)
                    member _.Sequential xs = Sequential xs
                    member _.Builder x b = Builder (x, b)
                }
            TreeBuilder =
-                { new TreeBuilderCataCase<_, _> with
+                { new TreeBuilderCataCase<_, _, _, _> with
                    member _.Child x = Child x
                    member _.Parent x = Parent x
                }
@@ -27,7 +27,7 @@ module TestCataGenerator =
    [<Test>]
    let ``Example`` () =
        let x =
-            Tree.Pair (Tree.Const (Const.Int 0), Tree.Const (Const.String ""), PairOpKind.ThenDoSeq)
+            Tree.Pair (Tree.Const (Const.Verbatim 0, "hi"), Tree.Const (Const.String "", "bye"), PairOpKind.ThenDoSeq)

        TreeCata.runTree idCata x |> shouldEqual x

@@ -36,7 +36,7 @@ module TestCataGenerator =
    let ``Cata works`` () =
        let builderCases = ref 0

-        let property (x : Tree) =
+        let property (x : Tree<int, string>) =
            match x with
            | Tree.Builder _ -> Interlocked.Increment builderCases |> ignore
            | _ -> ()
--- a/WoofWare.Myriad.Plugins.Test/TestCataGenerator/TestMyList.fs
+++ b/WoofWare.Myriad.Plugins.Test/TestCataGenerator/TestMyList.fs
@@ -0,0 +1,77 @@
+namespace WoofWare.Myriad.Plugins.Test
+
+open NUnit.Framework
+open FsCheck
+open FsUnitTyped
+open ConsumePlugin
+
+[<TestFixture>]
+module TestMyList =
+
+    let idCata<'a> : MyListCata<'a, _> =
+        {
+            MyList =
+                { new MyListCataCase<'a, _> with
+                    member _.Nil = MyList.Nil
+
+                    member _.Cons head tail =
+                        MyList.Cons
+                            {
+                                Head = head
+                                Tail = tail
+                            }
+                }
+        }
+
+    [<Test>]
+    let ``Cata works`` () =
+        let property (x : MyList<int>) = MyListCata.runMyList idCata x = x
+
+        Check.QuickThrowOnFailure property
+
+    let toListCata<'a> =
+        {
+            MyList =
+                { new MyListCataCase<'a, 'a list> with
+                    member _.Nil = []
+                    member _.Cons (head : 'a) (tail : 'a list) = head :: tail
+                }
+        }
+
+    let toListViaCata<'a> (l : MyList<'a>) : 'a list = MyListCata.runMyList toListCata l
+
+
+    [<Test>]
+    let ``Example of a fold converting to a new data structure`` () =
+        let rec toListNaive (l : MyList<int>) : int list =
+            match l with
+            | MyList.Nil -> []
+            | MyList.Cons consCell -> consCell.Head :: toListNaive consCell.Tail
+
+        Check.QuickThrowOnFailure (fun l -> toListNaive l = toListViaCata l)
+
+    [<Test>]
+    let ``Example of equivalence with FoldBack`` () =
+        let baseCase = 0L
+        let atLeaf (head : int) (tail : int64) : int64 = int64 head + tail
+
+        let sumCata =
+            {
+                MyList =
+                    { new MyListCataCase<int, int64> with
+                        member _.Nil = baseCase
+                        member _.Cons (head : int) (tail : int64) = atLeaf head tail
+                    }
+            }
+
+        let viaCata (l : MyList<int>) : int64 = MyListCata.runMyList sumCata l
+
+        let viaFold (l : MyList<int>) : int64 =
+            // choose your favourite "to list" method - here I use the cata
+            // but that could have been done naively
+            (toListViaCata l, baseCase)
+            ||> List.foldBack (fun elt state -> atLeaf elt state)
+
+        let property (l : MyList<int>) = viaCata l = viaFold l
+
+        Check.QuickThrowOnFailure property
--- a/WoofWare.Myriad.Plugins.Test/TestCataGenerator/TestMyList2.fs
+++ b/WoofWare.Myriad.Plugins.Test/TestCataGenerator/TestMyList2.fs
@@ -0,0 +1,25 @@
+namespace WoofWare.Myriad.Plugins.Test
+
+open NUnit.Framework
+open FsCheck
+open FsUnitTyped
+open ConsumePlugin
+
+[<TestFixture>]
+module TestMyList2 =
+
+    let idCata<'a> : MyList2Cata<'a, _> =
+        {
+            MyList2 =
+                { new MyList2CataCase<'a, _> with
+                    member _.Nil = MyList2.Nil
+
+                    member _.Cons (head : 'a) (tail : MyList2<'a>) = MyList2.Cons (head, tail)
+                }
+        }
+
+    [<Test>]
+    let ``Cata works`` () =
+        let property (x : MyList2<int>) = MyList2Cata.runMyList2 idCata x = x
+
+        Check.QuickThrowOnFailure property
--- a/WoofWare.Myriad.Plugins.Test/TestHttpClient/TestPureGymRestApi.fs
+++ b/WoofWare.Myriad.Plugins.Test/TestHttpClient/TestPureGymRestApi.fs
@@ -89,6 +89,7 @@ module TestPureGymRestApi =
        let api = PureGymApi.make client

        api.GetGymAttendance(requestedGym).Result |> shouldEqual expected
+        api.GetGymAttendance'(requestedGym).Result |> shouldEqual expected

    let memberCases =
        PureGymDtos.memberCases |> List.allPairs baseUris |> List.map TestCaseData
@@ -234,6 +235,33 @@ module TestPureGymRestApi =

        api.GetSessions(startDate, endDate).Result |> shouldEqual expected

+    [<TestCaseSource(nameof sessionsCases)>]
+    let ``Test GetSessionsWithQuery``
+        (baseUri : Uri, (startDate : DateOnly, (endDate : DateOnly, (json : string, expected : Sessions))))
+        =
+        let proc (message : HttpRequestMessage) : HttpResponseMessage Async =
+            async {
+                message.Method |> shouldEqual HttpMethod.Get
+
+                // This one is specified as being absolute, in its attribute on the IPureGymApi type
+                let expectedUri =
+                    let fromDate = dateOnlyToString startDate
+                    let toDate = dateOnlyToString endDate
+                    $"https://example.com/v2/gymSessions/member?foo=1&fromDate=%s{fromDate}&toDate=%s{toDate}"
+
+                message.RequestUri.ToString () |> shouldEqual expectedUri
+
+                let content = new StringContent (json)
+                let resp = new HttpResponseMessage (HttpStatusCode.OK)
+                resp.Content <- content
+                return resp
+            }
+
+        use client = HttpClientMock.make baseUri proc
+        let api = PureGymApi.make client
+
+        api.GetSessionsWithQuery(startDate, endDate).Result |> shouldEqual expected
+
    [<Test>]
    let ``URI example`` () =
        let proc (message : HttpRequestMessage) : HttpResponseMessage Async =
--- a/WoofWare.Myriad.Plugins.Test/TestHttpClient/TestVaultClient.fs
+++ b/WoofWare.Myriad.Plugins.Test/TestHttpClient/TestVaultClient.fs
@@ -87,8 +87,10 @@ module TestVaultClient =
    }
 }"""

-    [<Test>]
-    let ``URI example`` () =
+    [<TestCase 1>]
+    [<TestCase 2>]
+    [<TestCase 3>]
+    let ``URI example`` (vaultClientId : int) =
        let proc (message : HttpRequestMessage) : HttpResponseMessage Async =
            async {
                message.Method |> shouldEqual HttpMethod.Get
@@ -112,10 +114,25 @@ module TestVaultClient =
            }

        use client = HttpClientMock.make (Uri "https://my-vault.com") proc
-        let api = VaultClient.make client

-        let vaultResponse = api.GetJwt("role", "jwt").Result
-        let value = api.GetSecret(vaultResponse, "path", "mount").Result
+        let value =
+            match vaultClientId with
+            | 1 ->
+                let api = VaultClient.make client
+                let vaultResponse = api.GetJwt("role", "jwt").Result
+                let value = api.GetSecret(vaultResponse, "path", "mount").Result
+                value
+            | 2 ->
+                let api = VaultClientNonExtensionMethod.make client
+                let vaultResponse = api.GetJwt("role", "jwt").Result
+                let value = api.GetSecret(vaultResponse, "path", "mount").Result
+                value
+            | 3 ->
+                let api = VaultClientExtensionMethod.make client
+                let vaultResponse = api.GetJwt("role", "jwt").Result
+                let value = api.GetSecret(vaultResponse, "path", "mount").Result
+                value
+            | _ -> failwith $"Unrecognised ID: %i{vaultClientId}"

        value.Data
        |> Seq.toList
@@ -168,3 +185,5 @@ module TestVaultClient =
                "key8_1", "https://example.com/data8/1"
                "key8_2", "https://example.com/data8/2"
            ]
+
+    let _canSeePastExtensionMethod = VaultClientExtensionMethod.thisClashes
--- a/WoofWare.Myriad.Plugins.Test/TestJsonParse/TestExtensionMethod.fs
+++ b/WoofWare.Myriad.Plugins.Test/TestJsonParse/TestExtensionMethod.fs
@@ -1,6 +1,7 @@
 namespace WoofWare.Myriad.Plugins.Test

 open System
+open System.Numerics
 open System.Text.Json.Nodes
 open ConsumePlugin
 open NUnit.Framework
@@ -12,15 +13,62 @@ module TestExtensionMethod =
    [<Test>]
    let ``Parse via extension method`` () =
        let json =
-            """{"tinker": "job", "tailor": 3, "soldier": "https://example.com", "sailor": 3.1}"""
+            """{
+    "alpha": "hello!",
+    "bravo": "https://example.com",
+    "charlie": 0.3341,
+    "delta": 110033.4,
+    "echo": -0.000993,
+    "foxtrot": -999999999999,
+    "golf": -123456789101112,
+    "hotel": 18446744073709551615,
+    "india": 99884,
+    "juliette": 12223334,
+    "kilo": -2147483642,
+    "lima": 4294967293,
+    "mike": -32767,
+    "november": 65533,
+    "oscar": -125,
+    "papa": 253,
+    "quebec": 254,
+    "tango": -3,
+    "uniform": 1004443.300988393349583009,
+    "victor": "x",
+    "whiskey": 123456123456123456123456123456123456123456
+}"""
            |> JsonNode.Parse

        let expected =
            {
-                Tinker = "job"
-                Tailor = 3
-                Soldier = Uri "https://example.com"
-                Sailor = 3.1
+                Alpha = "hello!"
+                Bravo = Uri "https://example.com"
+                Charlie = 0.3341
+                Delta = 110033.4f
+                Echo = -0.000993f
+                Foxtrot = -999999999999.0
+                Golf = -123456789101112L
+                Hotel = 18446744073709551615UL
+                India = 99884
+                Juliette = 12223334u
+                Kilo = -2147483642
+                Lima = 4294967293u
+                Mike = -32767s
+                November = 65533us
+                Oscar = -125y
+                Papa = 253uy
+                Quebec = 254uy
+                Tango = -3y
+                Uniform = 1004443.300988393349583009m
+                Victor = 'x'
+                Whiskey =
+                    let mutable i = BigInteger 0
+
+                    for _ = 0 to 6 do
+                        i <- i * BigInteger 1000000 + BigInteger 123456
+
+                    i
            }

-        ToGetExtensionMethod.jsonParse json |> shouldEqual expected
+        let actual = ToGetExtensionMethod.jsonParse json
+
+        actual |> shouldEqual expected
--- a/WoofWare.Myriad.Plugins.Test/TestJsonParse/TestJsonParse.fs
+++ b/WoofWare.Myriad.Plugins.Test/TestJsonParse/TestJsonParse.fs
@@ -7,6 +7,8 @@ open FsUnitTyped

 [<TestFixture>]
 module TestJsonParse =
+    let _canSeePastExtensionMethod = ToGetExtensionMethod.thisModuleWouldClash
+
    [<Test>]
    let ``Single example`` () =
        let s =
--- a/WoofWare.Myriad.Plugins.Test/TestJsonSerialize/TestJsonSerde.fs
+++ b/WoofWare.Myriad.Plugins.Test/TestJsonSerialize/TestJsonSerde.fs
@@ -2,10 +2,9 @@ namespace WoofWare.Myriad.Plugins.Test

 open System
 open System.Collections.Generic
-open System.IO
-open System.Text
-open System.Text.Json
 open System.Text.Json.Nodes
+open FsCheck.Random
+open Microsoft.FSharp.Reflection
 open NUnit.Framework
 open FsCheck
 open FsUnitTyped
@@ -124,3 +123,82 @@ module TestJsonSerde =
        |> shouldEqual (
            sprintf """{"it\u0027s-a-me":"%s","map":{},"readOnlyDict":{},"dict":{},"concreteDict":{}}""" guidStr
        )
+
+    type Generators =
+        static member TestCase () =
+            { new Arbitrary<InnerTypeWithBoth>() with
+                override x.Generator = innerGen 5
+            }
+
+    let sanitiseInner (r : InnerTypeWithBoth) : InnerTypeWithBoth =
+        {
+            Thing = r.Thing
+            Map = r.Map
+            ReadOnlyDict = r.ReadOnlyDict
+            Dict = r.Dict
+            ConcreteDict = r.ConcreteDict
+        }
+
+    let sanitiseRec (r : JsonRecordTypeWithBoth) : JsonRecordTypeWithBoth =
+        {
+            A = r.A
+            B = if isNull r.B then "<null>" else r.B
+            C =
+                if Object.ReferenceEquals (r.C, (null : obj)) then
+                    []
+                else
+                    r.C
+            D = sanitiseInner r.D
+            E = if isNull r.E then [||] else r.E
+            F =
+                if Object.ReferenceEquals (r.F, (null : obj)) then
+                    [||]
+                else
+                    r.F
+        }
+
+    let duGen =
+        gen {
+            let! case = Gen.choose (0, 2)
+
+            match case with
+            | 0 -> return FirstDu.EmptyCase
+            | 1 ->
+                let! s = Arb.generate<NonNull<string>>
+                return FirstDu.Case1 s.Get
+            | 2 ->
+                let! i = Arb.generate<int>
+                let! record = outerGen
+                return FirstDu.Case2 (record, i)
+            | _ -> return failwith $"unexpected: %i{case}"
+        }
+
+    [<Test>]
+    let ``Discriminated union works`` () =
+        let property (du : FirstDu) : unit =
+            du
+            |> FirstDu.toJsonNode
+            |> fun s -> s.ToJsonString ()
+            |> JsonNode.Parse
+            |> FirstDu.jsonParse
+            |> shouldEqual du
+
+        property |> Prop.forAll (Arb.fromGen duGen) |> Check.QuickThrowOnFailure
+
+    [<Test>]
+    let ``DU generator covers all cases`` () =
+        let rand = Random ()
+        let cases = FSharpType.GetUnionCases typeof<FirstDu>
+        let counts = Array.zeroCreate<int> cases.Length
+
+        let decompose = FSharpValue.PreComputeUnionTagReader typeof<FirstDu>
+
+        Gen.listOf duGen
+        |> Gen.eval 100 (StdGen.StdGen (rand.Next (), rand.Next ()))
+        |> List.iter (fun du ->
+            let tag = decompose du
+            counts.[tag] <- counts.[tag] + 1
+        )
+
+        for i in counts do
+            i |> shouldBeGreaterThan 0
--- a/WoofWare.Myriad.Plugins.Test/WoofWare.Myriad.Plugins.Test.fsproj
+++ b/WoofWare.Myriad.Plugins.Test/WoofWare.Myriad.Plugins.Test.fsproj
@@ -25,19 +25,20 @@
    <Compile Include="TestCataGenerator\TestCataGenerator.fs" />
    <Compile Include="TestCataGenerator\TestDirectory.fs" />
    <Compile Include="TestCataGenerator\TestGift.fs" />
+    <Compile Include="TestCataGenerator\TestMyList.fs" />
+    <Compile Include="TestCataGenerator\TestMyList2.fs" />
    <Compile Include="TestRemoveOptions.fs"/>
    <Compile Include="TestSurface.fs"/>
    <None Include="../.github/workflows/dotnet.yaml" />
  </ItemGroup>

  <ItemGroup>
-    <PackageReference Include="ApiSurface" Version="4.0.28"/>
+    <PackageReference Include="ApiSurface" Version="4.0.40"/>
    <PackageReference Include="FsCheck" Version="2.16.6"/>
    <PackageReference Include="FsUnit" Version="6.0.0"/>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0"/>
-    <PackageReference Include="NUnit" Version="4.0.1"/>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0"/>
+    <PackageReference Include="NUnit" Version="4.1.0"/>
    <PackageReference Include="NUnit3TestAdapter" Version="4.5.0"/>
-    <PackageReference Include="coverlet.collector" Version="6.0.0"/>
  </ItemGroup>

  <ItemGroup>
--- a/WoofWare.Myriad.Plugins/AstHelper.fs
+++ b/WoofWare.Myriad.Plugins/AstHelper.fs
@@ -1,7 +1,6 @@
 namespace WoofWare.Myriad.Plugins

 open Fantomas.FCS.Syntax
-open Fantomas.FCS.SyntaxTrivia
 open Fantomas.FCS.Text.Range
 open Fantomas.FCS.Xml
 open Myriad.Core.AstExtensions
@@ -54,6 +53,7 @@ type internal InterfaceType =
    {
        Attributes : SynAttribute list
        Name : LongIdent
+        Inherits : SynType list
        Members : MemberInfo list
        Properties : PropertyInfo list
        Generics : SynTyparDecls option
@@ -76,6 +76,9 @@ type internal AdtNode =
    {
        Type : SynType
        Name : Ident option
+        /// An ordered list, so you can look up any given generic within `this.Type`
+        /// to discover what its index is in the parent DU which defined it.
+        GenericsOfParent : SynTyparDecl list
    }

 /// A DU is a sum of products (e.g. `type Thing = Foo of a * b`);
@@ -85,6 +88,10 @@ type internal AdtProduct =
    {
        Name : SynIdent
        Fields : AdtNode list
+        /// This AdtProduct represents a product in which there might be
+        /// some bound type parameters. This field lists the bound
+        /// type parameters in the order they appeared on the parent type.
+        Generics : SynTyparDecl list
    }

 [<RequireQualifiedAccess>]
@@ -98,81 +105,17 @@ module internal AstHelper =
        SynExpr.Record (None, None, fields, range0)

    let defineRecordType (record : RecordType) : SynTypeDefn =
-        let repr =
-            SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Record (None, Seq.toList record.Fields, range0), range0)
-
        let name =
-            SynComponentInfo.Create (
-                [ record.Name ],
-                ?xmldoc = record.XmlDoc,
-                ?parameters = record.Generics,
-                access = record.Accessibility
-            )
+            SynComponentInfo.create record.Name
+            |> SynComponentInfo.setAccessibility record.Accessibility
+            |> match record.XmlDoc with
+               | None -> id
+               | Some doc -> SynComponentInfo.withDocString doc
+            |> SynComponentInfo.setGenerics record.Generics

-        let trivia : SynTypeDefnTrivia =
-            {
-                LeadingKeyword = SynTypeDefnLeadingKeyword.Type range0
-                EqualsRange = Some range0
-                WithKeyword = Some range0
-            }
-
-        SynTypeDefn (name, repr, defaultArg record.Members SynMemberDefns.Empty, None, range0, trivia)
-
-    let isOptionIdent (ident : SynLongIdent) : bool =
-        match ident.LongIdent with
-        | [ i ] when System.String.Equals (i.idText, "option", System.StringComparison.OrdinalIgnoreCase) -> true
-        // TODO: consider Microsoft.FSharp.Option or whatever it is
-        | _ -> false
-
-    let isListIdent (ident : SynLongIdent) : bool =
-        match ident.LongIdent with
-        | [ i ] when System.String.Equals (i.idText, "list", System.StringComparison.OrdinalIgnoreCase) -> true
-        // TODO: consider FSharpList or whatever it is
-        | _ -> false
-
-    let isArrayIdent (ident : SynLongIdent) : bool =
-        match ident.LongIdent with
-        | [ i ] when
-            System.String.Equals (i.idText, "array", System.StringComparison.OrdinalIgnoreCase)
-            || System.String.Equals (i.idText, "[]", System.StringComparison.Ordinal)
-            ->
-            true
-        | _ -> false
-
-    let isResponseIdent (ident : SynLongIdent) : bool =
-        match ident.LongIdent |> List.map _.idText with
-        | [ "Response" ]
-        | [ "RestEase" ; "Response" ] -> true
-        | _ -> false
-
-    let isMapIdent (ident : SynLongIdent) : bool =
-        match ident.LongIdent |> List.map _.idText with
-        | [ "Map" ] -> true
-        | _ -> false
-
-    let isReadOnlyDictionaryIdent (ident : SynLongIdent) : bool =
-        match ident.LongIdent |> List.map _.idText with
-        | [ "IReadOnlyDictionary" ]
-        | [ "Generic" ; "IReadOnlyDictionary" ]
-        | [ "Collections" ; "Generic" ; "IReadOnlyDictionary" ]
-        | [ "System" ; "Collections" ; "Generic" ; "IReadOnlyDictionary" ] -> true
-        | _ -> false
-
-    let isDictionaryIdent (ident : SynLongIdent) : bool =
-        match ident.LongIdent |> List.map _.idText with
-        | [ "Dictionary" ]
-        | [ "Generic" ; "Dictionary" ]
-        | [ "Collections" ; "Generic" ; "Dictionary" ]
-        | [ "System" ; "Collections" ; "Generic" ; "Dictionary" ] -> true
-        | _ -> false
-
-    let isIDictionaryIdent (ident : SynLongIdent) : bool =
-        match ident.LongIdent |> List.map _.idText with
-        | [ "IDictionary" ]
-        | [ "Generic" ; "IDictionary" ]
-        | [ "Collections" ; "Generic" ; "IDictionary" ]
-        | [ "System" ; "Collections" ; "Generic" ; "IDictionary" ] -> true
-        | _ -> false
+        SynTypeDefnRepr.record (Seq.toList record.Fields)
+        |> SynTypeDefn.create name
+        |> SynTypeDefn.withMemberDefns (defaultArg record.Members SynMemberDefns.Empty)

    let rec private extractOpensFromDecl (moduleDecls : SynModuleDecl list) : SynOpenDeclTarget list =
        moduleDecls
@@ -217,7 +160,7 @@ module internal AstHelper =
                Attributes = []
                IsOptional = false
                Id = None
-                Type = SynType.Var (typar, range0)
+                Type = SynType.var typar
            },
            false
        | _ -> failwithf "expected SignatureParameter, got: %+A" ty
@@ -319,7 +262,7 @@ module internal AstHelper =
                                    Attributes = []
                                    IsOptional = false
                                    Id = None
-                                    Type = SynType.CreateLongIdent (SynLongIdent.CreateFromLongIdent ident)
+                                    Type = SynType.createLongIdent ident
                                }
                                |> List.singleton
                        }
@@ -331,11 +274,22 @@ module internal AstHelper =
                                    Attributes = []
                                    IsOptional = false
                                    Id = None
-                                    Type = SynType.Var (typar, range0)
+                                    Type = SynType.var typar
+                                }
+                                |> List.singleton
+                        }
+                    | arg ->
+                        {
+                            HasParen = false
+                            Args =
+                                {
+                                    Attributes = []
+                                    IsOptional = false
+                                    Id = None
+                                    Type = arg
                                }
                                |> List.singleton
                        }
-                    | _ -> failwith $"Unrecognised args in interface method declaration: %+A{args}"
                    |> fun ty ->
                        { ty with
                            HasParen = ty.HasParen || hasParen
@@ -379,50 +333,90 @@ module internal AstHelper =

        let attrs = attrs |> List.collect (fun s -> s.Attributes)

-        let members, properties =
+        let members, inherits =
            match synTypeDefnRepr with
            | SynTypeDefnRepr.ObjectModel (_kind, members, _) ->
                members
                |> List.map (fun defn ->
                    match defn with
-                    | SynMemberDefn.AbstractSlot (slotSig, flags, _, _) -> parseMember slotSig flags
+                    | SynMemberDefn.AbstractSlot (slotSig, flags, _, _) -> Choice1Of2 (parseMember slotSig flags)
+                    | SynMemberDefn.Inherit (baseType, _asIdent, _) -> Choice2Of2 baseType
                    | _ -> failwith $"Unrecognised member definition: %+A{defn}"
                )
            | _ -> failwith $"Unrecognised SynTypeDefnRepr for an interface type: %+A{synTypeDefnRepr}"
            |> List.partitionChoice

+        let members, properties = members |> List.partitionChoice
+
        {
            Members = members
            Properties = properties
            Name = interfaceName
+            Inherits = inherits
            Attributes = attrs
            Generics = typars
            Accessibility = accessibility
        }

-    let getUnionCases (SynTypeDefn.SynTypeDefn (_, repr, _, _, _, _)) : AdtProduct list =
+    let getUnionCases
+        (SynTypeDefn.SynTypeDefn (info, repr, _, _, _, _))
+        : AdtProduct list * SynTyparDecl list * SynAccess option
+        =
+        let typars, access =
+            match info with
+            | SynComponentInfo (_, typars, _, _, _, _, access, _) -> typars, access
+
+        let typars =
+            match typars with
+            | None -> []
+            | Some (SynTyparDecls.PrefixList (decls, _)) -> decls
+            | Some (SynTyparDecls.SinglePrefix (l, _)) -> [ l ]
+            | Some (SynTyparDecls.PostfixList (decls, constraints, _)) ->
+                if not constraints.IsEmpty then
+                    failwith "Constrained type parameters not currently supported"
+
+                decls
+
        match repr with
        | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Union (_, cases, _), _) ->
-            cases
-            |> List.map (fun (SynUnionCase.SynUnionCase (_, ident, kind, _, _, _, _)) ->
-                match kind with
-                | SynUnionCaseKind.FullType _ -> failwith "FullType union cases not supported"
-                | SynUnionCaseKind.Fields fields ->
-                    {
-                        Name = ident
-                        Fields =
-                            fields
-                            |> List.map (fun (SynField.SynField (_, _, id, ty, _, _, _, _, _)) ->
-                                {
-                                    Type = ty
-                                    Name = id
-                                }
-                            )
-                    }
-            )
+            let cases =
+                cases
+                |> List.map (fun (SynUnionCase.SynUnionCase (_, ident, kind, _, _, _, _)) ->
+                    match kind with
+                    | SynUnionCaseKind.FullType _ -> failwith "FullType union cases not supported"
+                    | SynUnionCaseKind.Fields fields ->
+                        {
+                            Name = ident
+                            Fields =
+                                fields
+                                |> List.map (fun (SynField.SynField (_, _, id, ty, _, _, _, _, _)) ->
+                                    {
+                                        Type = ty
+                                        Name = id
+                                        GenericsOfParent = typars
+                                    }
+                                )
+                            Generics = typars
+                        }
+                )
+
+            cases, typars, access
        | _ -> failwithf "Failed to get union cases for type that was: %+A" repr

-    let getRecordFields (SynTypeDefn.SynTypeDefn (_, repr, _, _, _, _)) : AdtNode list =
+    let getRecordFields (SynTypeDefn.SynTypeDefn (typeInfo, repr, _, _, _, _)) : AdtNode list =
+        let (SynComponentInfo.SynComponentInfo (typeParams = typars)) = typeInfo
+
+        let typars =
+            match typars with
+            | None -> []
+            | Some (SynTyparDecls.PrefixList (decls, _)) -> decls
+            | Some (SynTyparDecls.SinglePrefix (l, _)) -> [ l ]
+            | Some (SynTyparDecls.PostfixList (decls, constraints, _)) ->
+                if not constraints.IsEmpty then
+                    failwith "Constrained type parameters not currently supported"
+
+                decls
+
        match repr with
        | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Record (_, fields, _), _) ->
            fields
@@ -430,179 +424,7 @@ module internal AstHelper =
                {
                    Name = ident
                    Type = ty
+                    GenericsOfParent = typars
                }
            )
        | _ -> failwithf "Failed to get record elements for type that was: %+A" repr
-
-[<AutoOpen>]
-module internal SynTypePatterns =
-    let (|OptionType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.App (SynType.LongIdent ident, _, [ innerType ], _, _, _, _) when AstHelper.isOptionIdent ident ->
-            Some innerType
-        | _ -> None
-
-    let (|ListType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.App (SynType.LongIdent ident, _, [ innerType ], _, _, _, _) when AstHelper.isListIdent ident ->
-            Some innerType
-        | _ -> None
-
-    let (|ArrayType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.App (SynType.LongIdent ident, _, [ innerType ], _, _, _, _) when AstHelper.isArrayIdent ident ->
-            Some innerType
-        | SynType.Array (1, innerType, _) -> Some innerType
-        | _ -> None
-
-    let (|RestEaseResponseType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.App (SynType.LongIdent ident, _, [ innerType ], _, _, _, _) when AstHelper.isResponseIdent ident ->
-            Some innerType
-        | _ -> None
-
-    let (|DictionaryType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.App (SynType.LongIdent ident, _, [ key ; value ], _, _, _, _) when AstHelper.isDictionaryIdent ident ->
-            Some (key, value)
-        | _ -> None
-
-    let (|IDictionaryType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.App (SynType.LongIdent ident, _, [ key ; value ], _, _, _, _) when AstHelper.isIDictionaryIdent ident ->
-            Some (key, value)
-        | _ -> None
-
-    let (|IReadOnlyDictionaryType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.App (SynType.LongIdent ident, _, [ key ; value ], _, _, _, _) when
-            AstHelper.isReadOnlyDictionaryIdent ident
-            ->
-            Some (key, value)
-        | _ -> None
-
-    let (|MapType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.App (SynType.LongIdent ident, _, [ key ; value ], _, _, _, _) when AstHelper.isMapIdent ident ->
-            Some (key, value)
-        | _ -> None
-
-    /// Returns the string name of the type.
-    let (|PrimitiveType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.LongIdent ident ->
-            match ident.LongIdent with
-            | [ i ] ->
-                [ "string" ; "float" ; "int" ; "bool" ; "char" ]
-                |> List.tryFind (fun s -> s = i.idText)
-            | _ -> None
-        | _ -> None
-
-    let (|String|_|) (fieldType : SynType) : unit option =
-        match fieldType with
-        | SynType.LongIdent ident ->
-            match ident.LongIdent with
-            | [ i ] ->
-                [ "string" ]
-                |> List.tryFind (fun s -> s = i.idText)
-                |> Option.map ignore<string>
-            | _ -> None
-        | _ -> None
-
-    let (|Byte|_|) (fieldType : SynType) : unit option =
-        match fieldType with
-        | SynType.LongIdent ident ->
-            match ident.LongIdent with
-            | [ i ] -> [ "byte" ] |> List.tryFind (fun s -> s = i.idText) |> Option.map ignore<string>
-            | _ -> None
-        | _ -> None
-
-    let (|Guid|_|) (fieldType : SynType) : unit option =
-        match fieldType with
-        | SynType.LongIdent ident ->
-            match ident.LongIdent |> List.map (fun i -> i.idText) with
-            | [ "System" ; "Guid" ]
-            | [ "Guid" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|HttpResponseMessage|_|) (fieldType : SynType) : unit option =
-        match fieldType with
-        | SynType.LongIdent ident ->
-            match ident.LongIdent |> List.map (fun i -> i.idText) with
-            | [ "System" ; "Net" ; "Http" ; "HttpResponseMessage" ]
-            | [ "Net" ; "Http" ; "HttpResponseMessage" ]
-            | [ "Http" ; "HttpResponseMessage" ]
-            | [ "HttpResponseMessage" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|HttpContent|_|) (fieldType : SynType) : unit option =
-        match fieldType with
-        | SynType.LongIdent ident ->
-            match ident.LongIdent |> List.map (fun i -> i.idText) with
-            | [ "System" ; "Net" ; "Http" ; "HttpContent" ]
-            | [ "Net" ; "Http" ; "HttpContent" ]
-            | [ "Http" ; "HttpContent" ]
-            | [ "HttpContent" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|Stream|_|) (fieldType : SynType) : unit option =
-        match fieldType with
-        | SynType.LongIdent ident ->
-            match ident.LongIdent |> List.map (fun i -> i.idText) with
-            | [ "System" ; "IO" ; "Stream" ]
-            | [ "IO" ; "Stream" ]
-            | [ "Stream" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|NumberType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.LongIdent ident ->
-            match ident.LongIdent with
-            | [ i ] -> [ "string" ; "float" ; "int" ; "bool" ] |> List.tryFind (fun s -> s = i.idText)
-            | _ -> None
-        | _ -> None
-
-    let (|DateOnly|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)) ->
-            match ident |> List.map (fun i -> i.idText) with
-            | [ "System" ; "DateOnly" ]
-            | [ "DateOnly" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|DateTime|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)) ->
-            match ident |> List.map (fun i -> i.idText) with
-            | [ "System" ; "DateTime" ]
-            | [ "DateTime" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|Uri|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)) ->
-            match ident |> List.map (fun i -> i.idText) with
-            | [ "System" ; "Uri" ]
-            | [ "Uri" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|Task|_|) (fieldType : SynType) : SynType option =
-        match fieldType with
-        | SynType.App (SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)), _, args, _, _, _, _) ->
-            match ident |> List.map (fun i -> i.idText) with
-            | [ "Task" ]
-            | [ "Tasks" ; "Task" ]
-            | [ "Threading" ; "Tasks" ; "Task" ]
-            | [ "System" ; "Threading" ; "Tasks" ; "Task" ] ->
-                match args with
-                | [ arg ] -> Some arg
-                | _ -> failwithf "Expected Task to be applied to exactly one arg, but got: %+A" args
-            | _ -> None
-        | _ -> None
--- a/WoofWare.Myriad.Plugins/CataGenerator.fs
+++ b/WoofWare.Myriad.Plugins/CataGenerator.fs
--- a/WoofWare.Myriad.Plugins/HttpClientGenerator.fs
+++ b/WoofWare.Myriad.Plugins/HttpClientGenerator.fs
@@ -1,13 +1,16 @@
 namespace WoofWare.Myriad.Plugins

-open System
 open System.Net.Http
-open System.Text
 open Fantomas.FCS.Syntax
 open Fantomas.FCS.SyntaxTrivia
 open Fantomas.FCS.Xml
 open Myriad.Core

+type internal HttpClientGeneratorOutputSpec =
+    {
+        ExtensionMethods : bool
+    }
+
 [<RequireQualifiedAccess>]
 module internal HttpClientGenerator =
    open Fantomas.FCS.Text.Range
@@ -82,34 +85,50 @@ module internal HttpClientGenerator =
                match attr.TypeName.AsString with
                | "Get"
                | "GetAttribute"
+                | "WoofWare.Myriad.Plugins.RestEase.Get"
+                | "WoofWare.Myriad.Plugins.RestEase.GetAttribute"
                | "RestEase.Get"
                | "RestEase.GetAttribute" -> Some (HttpMethod.Get, attr.ArgExpr)
                | "Post"
                | "PostAttribute"
+                | "WoofWare.Myriad.Plugins.RestEase.Post"
+                | "WoofWare.Myriad.Plugins.RestEase.PostAttribute"
                | "RestEase.Post"
                | "RestEase.PostAttribute" -> Some (HttpMethod.Post, attr.ArgExpr)
                | "Put"
                | "PutAttribute"
+                | "WoofWare.Myriad.Plugins.RestEase.Put"
+                | "WoofWare.Myriad.Plugins.RestEase.PutAttribute"
                | "RestEase.Put"
                | "RestEase.PutAttribute" -> Some (HttpMethod.Put, attr.ArgExpr)
                | "Delete"
                | "DeleteAttribute"
+                | "WoofWare.Myriad.Plugins.RestEase.Delete"
+                | "WoofWare.Myriad.Plugins.RestEase.DeleteAttribute"
                | "RestEase.Delete"
                | "RestEase.DeleteAttribute" -> Some (HttpMethod.Delete, attr.ArgExpr)
                | "Head"
                | "HeadAttribute"
+                | "WoofWare.Myriad.Plugins.RestEase.Head"
+                | "WoofWare.Myriad.Plugins.RestEase.HeadAttribute"
                | "RestEase.Head"
                | "RestEase.HeadAttribute" -> Some (HttpMethod.Head, attr.ArgExpr)
                | "Options"
                | "OptionsAttribute"
+                | "WoofWare.Myriad.Plugins.RestEase.Options"
+                | "WoofWare.Myriad.Plugins.RestEase.OptionsAttribute"
                | "RestEase.Options"
                | "RestEase.OptionsAttribute" -> Some (HttpMethod.Options, attr.ArgExpr)
                | "Patch"
                | "PatchAttribute"
+                | "WoofWare.Myriad.Plugins.RestEase.Patch"
+                | "WoofWare.Myriad.Plugins.RestEase.PatchAttribute"
                | "RestEase.Patch"
                | "RestEase.PatchAttribute" -> Some (HttpMethod.Patch, attr.ArgExpr)
                | "Trace"
                | "TraceAttribute"
+                | "WoofWare.Myriad.Plugins.RestEase.Trace"
+                | "WoofWare.Myriad.Plugins.RestEase.TraceAttribute"
                | "RestEase.Trace"
                | "RestEase.TraceAttribute" -> Some (HttpMethod.Trace, attr.ArgExpr)
                | _ -> None
@@ -127,7 +146,8 @@ module internal HttpClientGenerator =
        |> List.choose (fun attr ->
            match attr.TypeName.AsString with
            | "Header"
-            | "RestEase.Header" ->
+            | "RestEase.Header"
+            | "WoofWare.Myriad.Plugins.RestEase.Header" ->
                match attr.ArgExpr with
                | SynExpr.Paren (SynExpr.Tuple (_, [ v1 ; v2 ], _, _), _, _, _) ->
                    Some [ SynExpr.stripOptionalParen v1 ; SynExpr.stripOptionalParen v2 ]
@@ -193,11 +213,7 @@ module internal HttpClientGenerator =

                let argType =
                    if arg.IsOptional then
-                        SynType.CreateApp (
-                            SynType.CreateLongIdent (SynLongIdent.CreateString "option"),
-                            [ arg.Type ],
-                            isPostfix = true
-                        )
+                        SynType.appPostfix "option" arg.Type
                    else
                        arg.Type

@@ -221,7 +237,7 @@ module internal HttpClientGenerator =
            let thisIdent = if variableHeaders.IsEmpty then "_" else "this"

            SynPat.LongIdent (
-                SynLongIdent.CreateFromLongIdent [ Ident.Create thisIdent ; info.Identifier ],
+                SynLongIdent.create [ Ident.create thisIdent ; info.Identifier ],
                None,
                None,
                argPats,
@@ -251,12 +267,10 @@ module internal HttpClientGenerator =
                            "Replace"
                            (SynExpr.CreateParenedTuple
                                [
-                                    SynExpr.CreateConstString ("{" + substituteId + "}")
+                                    SynExpr.CreateConst ("{" + substituteId + "}")
                                    SynExpr.callMethod "ToString" (SynExpr.CreateIdent varName)
                                    |> SynExpr.pipeThroughFunction (
-                                        SynExpr.CreateLongIdent (
-                                            SynLongIdent.Create [ "System" ; "Web" ; "HttpUtility" ; "UrlEncode" ]
-                                        )
+                                        SynExpr.createLongIdent [ "System" ; "Web" ; "HttpUtility" ; "UrlEncode" ]
                                    )
                                ])
                    | _ -> template
@@ -293,15 +307,30 @@ module internal HttpClientGenerator =
                    | None -> failwith "Unable to get parameter variable name from anonymous parameter"
                    | Some id -> id

+                let urlSeparator =
+                    // apparent Myriad bug: `IndexOf '?'` gets formatted as `IndexOf ?` which is clearly wrong
+                    let questionMark =
+                        SynExpr.CreateConst 63
+                        |> SynExpr.applyFunction (SynExpr.createIdent "char")
+                        |> SynExpr.paren
+
+                    let containsQuestion =
+                        info.UrlTemplate
+                        |> SynExpr.callMethodArg "IndexOf" questionMark
+                        |> SynExpr.greaterThanOrEqual (SynExpr.CreateConst 0)
+
+                    SynExpr.ifThenElse containsQuestion (SynExpr.CreateConst "?") (SynExpr.CreateConst "&")
+                    |> SynExpr.paren
+
                let prefix =
-                    SynExpr.CreateIdent firstValueId
+                    SynExpr.createIdent' firstValueId
                    |> SynExpr.toString firstValue.Type
-                    |> SynExpr.CreateParen
+                    |> SynExpr.paren
                    |> SynExpr.pipeThroughFunction (
-                        SynExpr.CreateLongIdent (SynLongIdent.Create [ "System" ; "Web" ; "HttpUtility" ; "UrlEncode" ])
+                        SynExpr.createLongIdent [ "System" ; "Web" ; "HttpUtility" ; "UrlEncode" ]
                    )
-                    |> SynExpr.CreateParen
-                    |> SynExpr.plus (SynExpr.CreateConstString ("?" + firstKey + "="))
+                    |> SynExpr.paren
+                    |> SynExpr.plus (SynExpr.plus urlSeparator (SynExpr.CreateConst (firstKey + "=")))

                (prefix, queryParams)
                ||> List.fold (fun uri (paramKey, paramValue) ->
@@ -310,63 +339,44 @@ module internal HttpClientGenerator =
                        | None -> failwith "Unable to get parameter variable name from anonymous parameter"
                        | Some id -> id

-                    SynExpr.toString paramValue.Type (SynExpr.CreateIdent paramValueId)
-                    |> SynExpr.CreateParen
+                    SynExpr.toString paramValue.Type (SynExpr.createIdent' paramValueId)
+                    |> SynExpr.paren
                    |> SynExpr.pipeThroughFunction (
-                        SynExpr.CreateLongIdent (
-                            SynLongIdent.Create [ "System" ; "Web" ; "HttpUtility" ; "UrlEncode" ]
-                        )
+                        SynExpr.createLongIdent [ "System" ; "Web" ; "HttpUtility" ; "UrlEncode" ]
                    )
-                    |> SynExpr.CreateParen
-                    |> SynExpr.plus (SynExpr.plus uri (SynExpr.CreateConstString ("&" + paramKey + "=")))
+                    |> SynExpr.paren
+                    |> SynExpr.plus (SynExpr.plus uri (SynExpr.CreateConst ("&" + paramKey + "=")))
                )
                |> SynExpr.plus requestUriTrailer
-                |> SynExpr.CreateParen
+                |> SynExpr.paren

        let requestUri =
-            let uriIdent = SynExpr.CreateLongIdent (SynLongIdent.Create [ "System" ; "Uri" ])
+            let uriIdent = SynExpr.createLongIdent [ "System" ; "Uri" ]
+
+            let baseAddress = SynExpr.createLongIdent [ "client" ; "BaseAddress" ]

            let baseAddress =
-                SynExpr.CreateLongIdent (SynLongIdent.Create [ "client" ; "BaseAddress" ])
-
-            let baseAddress =
-                SynExpr.CreateMatch (
-                    baseAddress,
-                    [
-                        SynMatchClause.Create (
-                            SynPat.CreateNull,
-                            None,
-                            match info.BaseAddress with
-                            | None ->
-                                SynExpr.CreateApp (
-                                    SynExpr.CreateIdentString "raise",
-                                    SynExpr.CreateParen (
-                                        SynExpr.CreateApp (
-                                            SynExpr.CreateLongIdent (
-                                                SynLongIdent.Create [ "System" ; "ArgumentNullException" ]
-                                            ),
-                                            SynExpr.CreateParenedTuple
-                                                [
-                                                    SynExpr.CreateApp (
-                                                        SynExpr.CreateIdentString "nameof",
-                                                        SynExpr.CreateParen baseAddress
-                                                    )
-                                                    SynExpr.CreateConstString
-                                                        "No base address was supplied on the type, and no BaseAddress was on the HttpClient."
-                                                ]
-                                        )
-                                    )
-                                )
-                            | Some expr -> SynExpr.CreateApp (uriIdent, expr)
-                        )
-                        SynMatchClause.Create (
-                            SynPat.CreateNamed (Ident.Create "v"),
-                            None,
-                            SynExpr.CreateIdentString "v"
-                        )
-                    ]
-                )
-                |> SynExpr.CreateParen
+                [
+                    SynMatchClause.Create (
+                        SynPat.CreateNull,
+                        None,
+                        match info.BaseAddress with
+                        | None ->
+                            [
+                                SynExpr.applyFunction (SynExpr.createIdent "nameof") (SynExpr.paren baseAddress)
+                                SynExpr.CreateConst
+                                    "No base address was supplied on the type, and no BaseAddress was on the HttpClient."
+                            ]
+                            |> SynExpr.CreateParenedTuple
+                            |> SynExpr.applyFunction (SynExpr.createLongIdent [ "System" ; "ArgumentNullException" ])
+                            |> SynExpr.paren
+                            |> SynExpr.applyFunction (SynExpr.createIdent "raise")
+                        | Some expr -> SynExpr.applyFunction uriIdent expr
+                    )
+                    SynMatchClause.Create (SynPat.named "v", None, SynExpr.createIdent "v")
+                ]
+                |> SynExpr.createMatch baseAddress
+                |> SynExpr.paren

            SynExpr.App (
                ExprAtomicFlag.Atomic,
@@ -380,7 +390,7 @@ module internal HttpClientGenerator =
                            SynExpr.CreateParenedTuple
                                [
                                    requestUriTrailer
-                                    SynExpr.CreateLongIdent (SynLongIdent.Create [ "System" ; "UriKind" ; "Relative" ])
+                                    SynExpr.createLongIdent [ "System" ; "UriKind" ; "Relative" ]
                                ]
                        )
                    ],
@@ -419,58 +429,43 @@ module internal HttpClientGenerator =
        let httpReqMessageConstructor =
            [
                SynExpr.equals
-                    (SynExpr.CreateIdentString "Method")
-                    (SynExpr.CreateLongIdent (
-                        SynLongIdent.Create
-                            [ "System" ; "Net" ; "Http" ; "HttpMethod" ; httpMethodString info.HttpMethod ]
-                    ))
-                SynExpr.equals (SynExpr.CreateIdentString "RequestUri") (SynExpr.CreateIdentString "uri")
+                    (SynExpr.createIdent "Method")
+                    (SynExpr.createLongIdent
+                        [ "System" ; "Net" ; "Http" ; "HttpMethod" ; httpMethodString info.HttpMethod ])
+                SynExpr.equals (SynExpr.createIdent "RequestUri") (SynExpr.createIdent "uri")
            ]
-            |> SynExpr.CreateParenedTuple
+            |> SynExpr.CreateTuple

        let returnExpr =
            match info.TaskReturnType with
-            | HttpResponseMessage -> SynExpr.CreateIdentString "response"
-            | String -> SynExpr.CreateIdentString "responseString"
-            | Stream -> SynExpr.CreateIdentString "responseStream"
+            | HttpResponseMessage -> SynExpr.createIdent "response"
+            | String -> SynExpr.createIdent "responseString"
+            | Stream -> SynExpr.createIdent "responseStream"
            | RestEaseResponseType contents ->
                let deserialiser =
-                    SynExpr.CreateLambda (
-                        [ SynPat.CreateConst SynConst.Unit ],
-                        SynExpr.CreateParen (
-                            JsonParseGenerator.parseNode
-                                None
-                                JsonParseGenerator.JsonParseOption.None
-                                contents
-                                (SynExpr.CreateIdentString "jsonNode")
-                        )
-                    )
+                    JsonParseGenerator.parseNode
+                        None
+                        JsonParseGenerator.JsonParseOption.None
+                        contents
+                        (SynExpr.createIdent "jsonNode")
+                    |> SynExpr.paren
+                    |> SynExpr.createThunk
+
                // new RestEase.Response (content : string, response : HttpResponseMessage, deserialiser : unit -> 'T)
-                SynExpr.New (
-                    false,
-                    SynType.App (
-                        SynType.CreateLongIdent (SynLongIdent.Create [ "RestEase" ; "Response" ]),
-                        Some range0,
-                        [ SynType.Anon range0 ],
-                        [],
-                        Some range0,
-                        false,
-                        range0
-                    ),
-                    SynExpr.CreateParenedTuple
+                SynExpr.createNew
+                    (SynType.app' (SynType.createLongIdent' [ "RestEase" ; "Response" ]) [ SynType.Anon range0 ])
+                    (SynExpr.CreateTuple
                        [
-                            SynExpr.CreateIdentString "responseString"
-                            SynExpr.CreateIdentString "response"
-                            SynExpr.CreateParen deserialiser
-                        ],
-                    range0
-                )
+                            SynExpr.createIdent "responseString"
+                            SynExpr.createIdent "response"
+                            deserialiser
+                        ])
            | retType ->
                JsonParseGenerator.parseNode
                    None
                    JsonParseGenerator.JsonParseOption.None
                    retType
-                    (SynExpr.CreateIdentString "jsonNode")
+                    (SynExpr.createIdent "jsonNode")

        let handleBodyParams =
            match bodyParam with
@@ -483,20 +478,15 @@ module internal HttpClientGenerator =
                    [
                        Let (
                            "queryParams",
-                            SynExpr.New (
-                                false,
-                                SynType.CreateLongIdent (
-                                    SynLongIdent.Create
-                                        [ "System" ; "Net" ; "Http" ; (bodyParamType : BodyParamMethods).ToString () ]
-                                ),
-                                SynExpr.CreateParen (SynExpr.CreateIdent bodyParamName),
-                                range0
-                            )
+                            SynExpr.createNew
+                                (SynType.createLongIdent'
+                                    [ "System" ; "Net" ; "Http" ; (bodyParamType : BodyParamMethods).ToString () ])
+                                (SynExpr.createIdent' bodyParamName)
                        )
                        Do (
                            SynExpr.LongIdentSet (
-                                SynLongIdent.Create [ "httpMessage" ; "Content" ],
-                                SynExpr.CreateIdentString "queryParams",
+                                SynLongIdent.createS' [ "httpMessage" ; "Content" ],
+                                SynExpr.createIdent "queryParams",
                                range0
                            )
                        )
@@ -505,8 +495,8 @@ module internal HttpClientGenerator =
                    [
                        Do (
                            SynExpr.LongIdentSet (
-                                SynLongIdent.Create [ "httpMessage" ; "Content" ],
-                                SynExpr.CreateIdent bodyParamName,
+                                SynLongIdent.createS' [ "httpMessage" ; "Content" ],
+                                SynExpr.createIdent' bodyParamName,
                                range0
                            )
                        )
@@ -515,38 +505,27 @@ module internal HttpClientGenerator =
                    [
                        Let (
                            "queryParams",
-                            SynExpr.New (
-                                false,
-                                SynType.CreateLongIdent (
-                                    SynLongIdent.Create [ "System" ; "Net" ; "Http" ; "StringContent" ]
-                                ),
-                                SynExpr.CreateParen (
-                                    SynExpr.CreateIdent bodyParamName
-                                    |> SynExpr.pipeThroughFunction (JsonSerializeGenerator.serializeNode ty)
-                                    |> SynExpr.pipeThroughFunction (
-                                        SynExpr.createLambda
-                                            "node"
-                                            (SynExpr.ifThenElse
-                                                (SynExpr.CreateApp (
-                                                    SynExpr.CreateIdentString "isNull",
-                                                    SynExpr.CreateIdentString "node"
-                                                ))
-                                                (SynExpr.CreateApp (
-                                                    SynExpr.CreateLongIdent (
-                                                        SynLongIdent.Create [ "node" ; "ToJsonString" ]
-                                                    ),
-                                                    SynExpr.CreateConst SynConst.Unit
-                                                ))
-                                                (SynExpr.CreateConst (SynConst.CreateString "null")))
-                                    )
-                                ),
-                                range0
-                            )
+                            SynExpr.createNew
+                                (SynType.createLongIdent' [ "System" ; "Net" ; "Http" ; "StringContent" ])
+                                (SynExpr.createIdent' bodyParamName
+                                 |> SynExpr.pipeThroughFunction (JsonSerializeGenerator.serializeNode ty)
+                                 |> SynExpr.pipeThroughFunction (
+                                     SynExpr.createLambda
+                                         "node"
+                                         (SynExpr.ifThenElse
+                                             (SynExpr.applyFunction
+                                                 (SynExpr.createIdent "isNull")
+                                                 (SynExpr.createIdent "node"))
+                                             (SynExpr.applyFunction
+                                                 (SynExpr.createLongIdent [ "node" ; "ToJsonString" ])
+                                                 (SynExpr.CreateConst ()))
+                                             (SynExpr.CreateConst "null"))
+                                 ))
                        )
                        Do (
                            SynExpr.LongIdentSet (
-                                SynLongIdent.Create [ "httpMessage" ; "Content" ],
-                                SynExpr.CreateIdent (Ident.Create "queryParams"),
+                                SynLongIdent.createS' [ "httpMessage" ; "Content" ],
+                                SynExpr.createIdent "queryParams",
                                range0
                            )
                        )
@@ -557,12 +536,9 @@ module internal HttpClientGenerator =
                LetBang (
                    "responseString",
                    SynExpr.awaitTask (
-                        SynExpr.CreateApp (
-                            SynExpr.CreateLongIdent (
-                                SynLongIdent.Create [ "response" ; "Content" ; "ReadAsStringAsync" ]
-                            ),
-                            SynExpr.CreateIdentString "ct"
-                        )
+                        SynExpr.applyFunction
+                            (SynExpr.createLongIdent [ "response" ; "Content" ; "ReadAsStringAsync" ])
+                            (SynExpr.createIdent "ct")
                    )
                )

@@ -570,12 +546,9 @@ module internal HttpClientGenerator =
                LetBang (
                    "responseStream",
                    SynExpr.awaitTask (
-                        SynExpr.CreateApp (
-                            SynExpr.CreateLongIdent (
-                                SynLongIdent.Create [ "response" ; "Content" ; "ReadAsStreamAsync" ]
-                            ),
-                            SynExpr.CreateIdentString "ct"
-                        )
+                        SynExpr.applyFunction
+                            (SynExpr.createLongIdent [ "response" ; "Content" ; "ReadAsStreamAsync" ])
+                            (SynExpr.createIdent "ct")
                    )
                )

@@ -583,67 +556,50 @@ module internal HttpClientGenerator =
                LetBang (
                    "jsonNode",
                    SynExpr.awaitTask (
-                        SynExpr.CreateApp (
-                            SynExpr.CreateLongIdent (
-                                SynLongIdent.Create [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonNode" ; "ParseAsync" ]
-                            ),
-                            SynExpr.CreateParenedTuple
+                        SynExpr.applyFunction
+                            (SynExpr.createLongIdent
+                                [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonNode" ; "ParseAsync" ])
+                            (SynExpr.CreateParenedTuple
                                [
-                                    SynExpr.CreateIdentString "responseStream"
-                                    SynExpr.equals
-                                        (SynExpr.CreateIdentString "cancellationToken")
-                                        (SynExpr.CreateIdentString "ct")
-                                ]
-                        )
+                                    SynExpr.createIdent "responseStream"
+                                    SynExpr.equals (SynExpr.createIdent "cancellationToken") (SynExpr.createIdent "ct")
+                                ])
                    )
                )

            let setVariableHeaders =
                variableHeaders
                |> List.map (fun (headerName, callToGetValue) ->
-                    Do (
-                        SynExpr.CreateApp (
-                            SynExpr.CreateLongIdent (SynLongIdent.Create [ "httpMessage" ; "Headers" ; "Add" ]),
-                            SynExpr.CreateParenedTuple
-                                [
-                                    headerName
-                                    SynExpr.CreateApp (
-                                        SynExpr.CreateLongIdent (
-                                            SynLongIdent.CreateFromLongIdent
-                                                [ Ident.Create "this" ; callToGetValue ; Ident.Create "ToString" ]
-                                        ),
-                                        SynExpr.CreateConst SynConst.Unit
-                                    )
-                                ]
-                        )
-                    )
+                    [
+                        headerName
+                        SynExpr.applyFunction
+                            (SynExpr.createLongIdent'
+                                [ Ident.Create "this" ; callToGetValue ; Ident.Create "ToString" ])
+                            (SynExpr.CreateConst ())
+                    ]
+                    |> SynExpr.CreateParenedTuple
+                    |> SynExpr.applyFunction (SynExpr.createLongIdent [ "httpMessage" ; "Headers" ; "Add" ])
+                    |> Do
                )

            let setConstantHeaders =
                constantHeaders
                |> List.map (fun (headerName, headerValue) ->
-                    Do (
-                        SynExpr.CreateApp (
-                            SynExpr.CreateLongIdent (SynLongIdent.Create [ "httpMessage" ; "Headers" ; "Add" ]),
-                            SynExpr.CreateParenedTuple [ headerName ; headerValue ]
-                        )
-                    )
+                    SynExpr.applyFunction
+                        (SynExpr.createLongIdent [ "httpMessage" ; "Headers" ; "Add" ])
+                        (SynExpr.CreateParenedTuple [ headerName ; headerValue ])
+                    |> Do
                )

            [
-                yield LetBang ("ct", SynExpr.CreateLongIdent (SynLongIdent.Create [ "Async" ; "CancellationToken" ]))
+                yield LetBang ("ct", SynExpr.createLongIdent [ "Async" ; "CancellationToken" ])
                yield Let ("uri", requestUri)
                yield
                    Use (
                        "httpMessage",
-                        SynExpr.New (
-                            false,
-                            SynType.CreateLongIdent (
-                                SynLongIdent.Create [ "System" ; "Net" ; "Http" ; "HttpRequestMessage" ]
-                            ),
-                            httpReqMessageConstructor,
-                            range0
-                        )
+                        SynExpr.createNew
+                            (SynType.createLongIdent' [ "System" ; "Net" ; "Http" ; "HttpRequestMessage" ])
+                            httpReqMessageConstructor
                    )

                yield! handleBodyParams
@@ -655,21 +611,19 @@ module internal HttpClientGenerator =
                    LetBang (
                        "response",
                        SynExpr.awaitTask (
-                            SynExpr.CreateApp (
-                                SynExpr.CreateLongIdent (SynLongIdent.Create [ "client" ; "SendAsync" ]),
-                                SynExpr.CreateParenedTuple
-                                    [ SynExpr.CreateIdentString "httpMessage" ; SynExpr.CreateIdentString "ct" ]
-                            )
+                            SynExpr.applyFunction
+                                (SynExpr.createLongIdent [ "client" ; "SendAsync" ])
+                                (SynExpr.CreateParenedTuple
+                                    [ SynExpr.createIdent "httpMessage" ; SynExpr.createIdent "ct" ])
                        )
                    )
                if info.EnsureSuccessHttpCode then
                    yield
                        Let (
                            "response",
-                            SynExpr.CreateApp (
-                                SynExpr.CreateLongIdent (SynLongIdent.Create [ "response" ; "EnsureSuccessStatusCode" ]),
-                                SynExpr.CreateConst SynConst.Unit
-                            )
+                            SynExpr.applyFunction
+                                (SynExpr.createLongIdent [ "response" ; "EnsureSuccessStatusCode" ])
+                                (SynExpr.CreateConst ())
                        )
                match info.TaskReturnType with
                | HttpResponseMessage -> ()
@@ -684,31 +638,34 @@ module internal HttpClientGenerator =
                    yield jsonNode
            ]
            |> SynExpr.createCompExpr "async" returnExpr
-            |> SynExpr.startAsTask (SynLongIdent.CreateFromLongIdent [ cancellationTokenArg ])
+            |> SynExpr.startAsTask (SynLongIdent.createI cancellationTokenArg)

-        SynMemberDefn.Member (
-            SynBinding.SynBinding (
-                info.Accessibility,
-                SynBindingKind.Normal,
-                false,
-                false,
-                [],
-                PreXmlDoc.Empty,
-                valData,
-                headPat,
-                None,
-                implementation,
-                range0,
-                DebugPointAtBinding.Yes range0,
-                SynExpr.synBindingTriviaZero true
-            ),
-            range0
+        SynBinding.SynBinding (
+            None,
+            SynBindingKind.Normal,
+            false,
+            false,
+            [],
+            PreXmlDoc.Empty,
+            valData,
+            headPat,
+            None,
+            implementation,
+            range0,
+            DebugPointAtBinding.Yes range0,
+            SynBinding.triviaZero true
        )
+        |> SynBinding.withAccessibility info.Accessibility
+        |> fun b -> SynMemberDefn.Member (b, range0)

    let getHttpAttributes (attrs : SynAttribute list) : HttpAttribute list =
        attrs
        |> List.choose (fun attr ->
            match attr.TypeName.AsString with
+            | "RestEase.Query"
+            | "RestEase.QueryAttribute"
+            | "WoofWare.Myriad.Plugins.RestEase.Query"
+            | "WoofWare.Myriad.Plugins.RestEase.QueryAttribute"
            | "Query"
            | "QueryAttribute" ->
                match attr.ArgExpr with
@@ -717,14 +674,22 @@ module internal HttpClientGenerator =
                    Some (HttpAttribute.Query (Some s))
                | SynExpr.Const (a, _) -> failwith $"unrecognised constant arg to the Query attribute: %+A{a}"
                | _ -> None
+            | "RestEase.Path"
+            | "RestEase.PathAttribute"
+            | "WoofWare.Myriad.Plugins.RestEase.Path"
+            | "WoofWare.Myriad.Plugins.RestEase.PathAttribute"
            | "Path"
            | "PathAttribute" ->
-                match attr.ArgExpr with
+                match attr.ArgExpr |> SynExpr.stripOptionalParen with
                | SynExpr.Const (SynConst.String (s, SynStringKind.Regular, _), _) ->
                    Some (HttpAttribute.Path (PathSpec.Verbatim s))
                | SynExpr.Const (SynConst.Unit, _) -> Some (HttpAttribute.Path PathSpec.MatchArgName)
                | SynExpr.Const (a, _) -> failwith $"unrecognised constant arg to the Path attribute: %+A{a}"
                | _ -> None
+            | "RestEase.Body"
+            | "RestEase.BodyAttribute"
+            | "WoofWare.Myriad.Plugins.RestEase.Body"
+            | "WoofWare.Myriad.Plugins.RestEase.BodyAttribute"
            | "Body"
            | "BodyAttribute" ->
                match attr.ArgExpr with
@@ -740,8 +705,10 @@ module internal HttpClientGenerator =
            match attr.TypeName.AsString with
            | "BasePath"
            | "RestEase.BasePath"
+            | "WoofWare.Myriad.Plugins.RestEase.BasePath"
            | "BasePathAttribute"
-            | "RestEase.BasePathAttribute" -> Some attr.ArgExpr
+            | "RestEase.BasePathAttribute"
+            | "WoofWare.Myriad.Plugins.RestEase.BasePathAttribute" -> Some attr.ArgExpr
            | _ -> None
        )

@@ -751,19 +718,25 @@ module internal HttpClientGenerator =
            match attr.TypeName.AsString with
            | "BaseAddress"
            | "RestEase.BaseAddress"
+            | "WoofWare.Myriad.Plugins.RestEase.BaseAddress"
            | "BaseAddressAttribute"
-            | "RestEase.BaseAddressAttribute" -> Some attr.ArgExpr
+            | "RestEase.BaseAddressAttribute"
+            | "WoofWare.Myriad.Plugins.RestEase.BaseAddressAttribute" -> Some attr.ArgExpr
            | _ -> None
        )

    let createModule
        (opens : SynOpenDeclTarget list)
        (ns : LongIdent)
-        (interfaceType : SynTypeDefn)
+        (interfaceType : SynTypeDefn, spec : HttpClientGeneratorOutputSpec)
        : SynModuleOrNamespace
        =
        let interfaceType = AstHelper.parseInterface interfaceType

+        if not (List.isEmpty interfaceType.Inherits) then
+            failwith
+                "HttpClientGenerator does not support inheritance. Remove the `inherit` keyword if you want to use this generator."
+
        let constantHeaders =
            interfaceType.Attributes
            |> extractHeaderInformation
@@ -878,17 +851,11 @@ module internal HttpClientGenerator =
                            SynValInfo.SynValInfo ([ [ SynArgInfo.Empty ] ; [] ], SynArgInfo.Empty),
                            None
                        ),
-                        SynPat.CreateLongIdent (
-                            SynLongIdent.CreateFromLongIdent [ Ident.Create "_" ; pi.Identifier ],
-                            []
-                        ),
+                        SynPat.CreateLongIdent (SynLongIdent.create [ Ident.create "_" ; pi.Identifier ], []),
                        Some (SynBindingReturnInfo.Create pi.Type),
-                        SynExpr.CreateApp (
-                            SynExpr.CreateLongIdent (
-                                SynLongIdent.CreateFromLongIdent [ Ident.lowerFirstLetter pi.Identifier ]
-                            ),
-                            SynExpr.CreateConst SynConst.Unit
-                        ),
+                        SynExpr.applyFunction
+                            (SynExpr.createLongIdent' [ Ident.lowerFirstLetter pi.Identifier ])
+                            (SynExpr.CreateConst ()),
                        range0,
                        DebugPointAtBinding.Yes range0,
                        {
@@ -903,11 +870,17 @@ module internal HttpClientGenerator =

        let members = propertyMembers @ nonPropertyMembers

-        let docString = PreXmlDoc.Create " Module for constructing a REST client."
+        let docString =
+            (if spec.ExtensionMethods then
+                 "Extension methods"
+             else
+                 "Module")
+            |> sprintf "%s for constructing a REST client."
+            |> PreXmlDoc.create

        let interfaceImpl =
            SynExpr.ObjExpr (
-                SynType.LongIdent (SynLongIdent.CreateFromLongIdent interfaceType.Name),
+                SynType.createLongIdent interfaceType.Name,
                None,
                Some range0,
                [],
@@ -920,80 +893,103 @@ module internal HttpClientGenerator =
        let headerArgs =
            properties
            |> List.map (fun (_, pi) ->
-                SynPat.CreateTyped (
-                    SynPat.CreateNamed (Ident.lowerFirstLetter pi.Identifier),
-                    SynType.CreateFun (SynType.CreateLongIdent "unit", pi.Type)
-                )
-                |> SynPat.CreateParen
+                SynPat.namedI (Ident.lowerFirstLetter pi.Identifier)
+                |> SynPat.annotateType (SynType.funFromDomain (SynType.named "unit") pi.Type)
            )

        let clientCreationArg =
-            SynPat.CreateTyped (
-                SynPat.CreateNamed (Ident.Create "client"),
-                SynType.CreateLongIdent (SynLongIdent.Create [ "System" ; "Net" ; "Http" ; "HttpClient" ])
-            )
-            |> SynPat.CreateParen
+            SynPat.named "client"
+            |> SynPat.annotateType (SynType.createLongIdent' [ "System" ; "Net" ; "Http" ; "HttpClient" ])

        let xmlDoc =
            if properties.IsEmpty then
-                " Create a REST client."
+                "Create a REST client."
            else
-                " Create a REST client. The input functions will be re-evaluated on every HTTP request to obtain the required values for the corresponding header properties."
+                "Create a REST client. The input functions will be re-evaluated on every HTTP request to obtain the required values for the corresponding header properties."
+            |> PreXmlDoc.create

-        let createFunc =
-            SynBinding.SynBinding (
-                None,
-                SynBindingKind.Normal,
-                false,
-                false,
-                [],
-                PreXmlDoc.Create xmlDoc,
-                SynValData.SynValData (
-                    None,
-                    SynValInfo.SynValInfo (
-                        [ [ SynArgInfo.SynArgInfo ([], false, Some (Ident.Create "client")) ] ],
-                        SynArgInfo.Empty
-                    ),
+        let functionName = Ident.create "client"
+
+        let valData =
+            let memberFlags =
+                if spec.ExtensionMethods then
+                    {
+                        SynMemberFlags.IsInstance = false
+                        SynMemberFlags.IsDispatchSlot = false
+                        SynMemberFlags.IsOverrideOrExplicitImpl = false
+                        SynMemberFlags.IsFinal = false
+                        SynMemberFlags.GetterOrSetterIsCompilerGenerated = false
+                        SynMemberFlags.MemberKind = SynMemberKind.Member
+                    }
+                    |> Some
+                else
                    None
-                ),
-                SynPat.CreateLongIdent (SynLongIdent.CreateString "make", headerArgs @ [ clientCreationArg ]),
-                Some (
-                    SynBindingReturnInfo.Create (
-                        SynType.LongIdent (SynLongIdent.CreateFromLongIdent interfaceType.Name)
-                    )
-                ),
-                interfaceImpl,
-                range0,
-                DebugPointAtBinding.NoneAtLet,
-                SynExpr.synBindingTriviaZero false
-            )
-            |> List.singleton
-            |> SynModuleDecl.CreateLet

-        let moduleName : LongIdent =
+            SynValData.SynValData (
+                memberFlags,
+                SynValInfo.SynValInfo ([ [ SynArgInfo.SynArgInfo ([], false, Some functionName) ] ], SynArgInfo.Empty),
+                None
+            )
+
+        let pattern = SynLongIdent.createS "make"
+
+        let returnInfo = SynType.createLongIdent interfaceType.Name
+
+        let nameWithoutLeadingI =
            List.last interfaceType.Name
            |> _.idText
            |> fun s ->
                if s.StartsWith 'I' then
-                    s.[1..]
+                    s.Substring 1
                else
                    failwith $"Expected interface type to start with 'I', but was: %s{s}"
-            |> Ident.Create
-            |> List.singleton
+
+        let createFunc =
+            if spec.ExtensionMethods then
+                let binding =
+                    SynBinding.basic (SynLongIdent.createS "make") (headerArgs @ [ clientCreationArg ]) interfaceImpl
+                    |> SynBinding.withXmlDoc xmlDoc
+                    |> SynBinding.withReturnAnnotation returnInfo
+                    |> SynMemberDefn.staticMember
+
+                let componentInfo =
+                    SynComponentInfo.create (Ident.create nameWithoutLeadingI)
+                    |> SynComponentInfo.withDocString (PreXmlDoc.create "Extension methods for HTTP clients")
+
+                let containingType =
+                    SynTypeDefnRepr.augmentation ()
+                    |> SynTypeDefn.create componentInfo
+                    |> SynTypeDefn.withMemberDefns [ binding ]
+
+                SynModuleDecl.Types ([ containingType ], range0)
+
+            else
+                SynBinding.basic (SynLongIdent.createS "make") (headerArgs @ [ clientCreationArg ]) interfaceImpl
+                |> SynBinding.withXmlDoc xmlDoc
+                |> SynBinding.withReturnAnnotation returnInfo
+                |> List.singleton
+                |> SynModuleDecl.CreateLet
+
+        let moduleName =
+            if spec.ExtensionMethods then
+                Ident.create (nameWithoutLeadingI + "HttpClientExtension")
+            else
+                Ident.create nameWithoutLeadingI

        let attribs =
-            [
-                SynAttributeList.Create SynAttribute.compilationRepresentation
-                SynAttributeList.Create (SynAttribute.RequireQualifiedAccess ())
-            ]
+            if spec.ExtensionMethods then
+                [ SynAttribute.autoOpen ]
+            else
+                [
+                    SynAttribute.compilationRepresentation
+                    SynAttribute.RequireQualifiedAccess ()
+                ]

        let modInfo =
-            SynComponentInfo.Create (
-                moduleName,
-                attributes = attribs,
-                xmldoc = docString,
-                access = interfaceType.Accessibility
-            )
+            SynComponentInfo.create moduleName
+            |> SynComponentInfo.withDocString docString
+            |> SynComponentInfo.addAttributes attribs
+            |> SynComponentInfo.setAccessibility interfaceType.Accessibility

        SynModuleOrNamespace.CreateNamespace (
            ns,
@@ -1023,9 +1019,29 @@ type HttpClientGenerator () =
            let namespaceAndTypes =
                types
                |> List.choose (fun (ns, types) ->
-                    match types |> List.filter Ast.hasAttribute<HttpClientAttribute> with
-                    | [] -> None
-                    | types -> Some (ns, types)
+                    types
+                    |> List.choose (fun typeDef ->
+                        match Ast.getAttribute<HttpClientAttribute> typeDef with
+                        | None -> None
+                        | Some attr ->
+                            let arg =
+                                match SynExpr.stripOptionalParen attr.ArgExpr with
+                                | SynExpr.Const (SynConst.Bool value, _) -> value
+                                | SynExpr.Const (SynConst.Unit, _) -> JsonParseAttribute.DefaultIsExtensionMethod
+                                | arg ->
+                                    failwith
+                                        $"Unrecognised argument %+A{arg} to [<%s{nameof HttpClientAttribute}>]. Literals are not supported. Use `true` or `false` (or unit) only."
+
+                            let spec =
+                                {
+                                    ExtensionMethods = arg
+                                }
+
+                            Some (typeDef, spec)
+                    )
+                    |> function
+                        | [] -> None
+                        | ty -> Some (ns, ty)
                )

            let modules =
--- a/WoofWare.Myriad.Plugins/InterfaceMockGenerator.fs
+++ b/WoofWare.Myriad.Plugins/InterfaceMockGenerator.fs
@@ -21,6 +21,9 @@ module internal InterfaceMockGenerator =
        | None -> failwith "Expected record field to have a name, but it was somehow anonymous"
        | Some id -> id

+    [<RequireQualifiedAccess>]
+    type private KnownInheritance = | IDisposable
+
    let createType
        (spec : GenerateMockOutputSpec)
        (name : string)
@@ -29,93 +32,80 @@ module internal InterfaceMockGenerator =
        (fields : SynField list)
        : SynModuleDecl
        =
-        let synValData =
-            {
-                SynMemberFlags.IsInstance = false
-                SynMemberFlags.IsDispatchSlot = false
-                SynMemberFlags.IsOverrideOrExplicitImpl = false
-                SynMemberFlags.IsFinal = false
-                SynMemberFlags.GetterOrSetterIsCompilerGenerated = false
-                SynMemberFlags.MemberKind = SynMemberKind.Member
-            }
+        let inherits =
+            interfaceType.Inherits
+            |> Seq.map (fun ty ->
+                match ty with
+                | SynType.LongIdent (SynLongIdent.SynLongIdent (name, _, _)) ->
+                    match name |> List.map _.idText with
+                    | [] -> failwith "Unexpected empty identifier in inheritance declaration"
+                    | [ "IDisposable" ]
+                    | [ "System" ; "IDisposable" ] -> KnownInheritance.IDisposable
+                    | _ -> failwithf "Unrecognised inheritance identifier: %+A" name
+                | x -> failwithf "Unrecognised type in inheritance: %+A" x
+            )
+            |> Set.ofSeq

        let failwithFun =
-            SynExpr.createLambda
-                "x"
-                (SynExpr.CreateApp (
-                    SynExpr.CreateIdentString "raise",
-                    SynExpr.CreateParen (
-                        SynExpr.CreateApp (
-                            SynExpr.CreateLongIdent (SynLongIdent.Create [ "System" ; "NotImplementedException" ]),
-                            SynExpr.CreateConstString "Unimplemented mock function"
-                        )
-                    )
-                ))
-
-        let constructorIdent =
-            let generics =
-                interfaceType.Generics
-                |> Option.map (fun generics -> SynValTyparDecls (Some generics, false))
-
-            SynPat.LongIdent (
-                SynLongIdent.CreateString "Empty",
-                None,
-                None, // no generics on the "Empty", only on the return type
-                SynArgPats.Pats (
-                    if generics.IsNone then
-                        []
-                    else
-                        [ SynPat.CreateParen (SynPat.CreateConst SynConst.Unit) ]
-                ),
-                None,
-                range0
-            )
+            SynExpr.createLongIdent [ "System" ; "NotImplementedException" ]
+            |> SynExpr.applyTo (SynExpr.CreateConst "Unimplemented mock function")
+            |> SynExpr.CreateParen
+            |> SynExpr.applyFunction (SynExpr.createIdent "raise")
+            |> SynExpr.createLambda "_"

        let constructorReturnType =
            match interfaceType.Generics with
            | None -> SynType.CreateLongIdent name
            | Some generics ->
-                let generics =
-                    generics.TyparDecls
-                    |> List.map (fun (SynTyparDecl (_, typar)) -> SynType.Var (typar, range0))

-                SynType.App (
-                    SynType.CreateLongIdent name,
-                    Some range0,
-                    generics,
-                    List.replicate (generics.Length - 1) range0,
-                    Some range0,
-                    false,
-                    range0
-                )
-            |> SynBindingReturnInfo.Create
+            let generics =
+                generics.TyparDecls
+                |> List.map (fun (SynTyparDecl (_, typar)) -> SynType.var typar)
+
+            SynType.app name generics
+
+        let constructorFields =
+            let extras =
+                if inherits.Contains KnownInheritance.IDisposable then
+                    let unitFun = SynExpr.createLambda "_" SynExpr.CreateUnit
+
+                    [ (SynLongIdent.createS "Dispose", true), Some unitFun ]
+                else
+                    []
+
+            let nonExtras =
+                fields
+                |> List.map (fun field -> (SynLongIdent.createI (getName field), true), Some failwithFun)
+
+            extras @ nonExtras

        let constructor =
-            SynMemberDefn.Member (
-                SynBinding.SynBinding (
-                    None,
-                    SynBindingKind.Normal,
-                    false,
-                    false,
-                    [],
-                    PreXmlDoc.Create " An implementation where every method throws.",
-                    SynValData.SynValData (Some synValData, SynValInfo.Empty, None),
-                    constructorIdent,
-                    Some constructorReturnType,
-                    AstHelper.instantiateRecord (
-                        fields
-                        |> List.map (fun field ->
-                            ((SynLongIdent.CreateFromLongIdent [ getName field ], true), Some failwithFun)
+            SynBinding.basic
+                (SynLongIdent.createS "Empty")
+                (if interfaceType.Generics.IsNone then
+                     []
+                 else
+                     [ SynPat.CreateConst SynConst.Unit ])
+                (AstHelper.instantiateRecord constructorFields)
+            |> SynBinding.makeStaticMember
+            |> SynBinding.withXmlDoc (PreXmlDoc.Create " An implementation where every method throws.")
+            |> SynBinding.withReturnAnnotation constructorReturnType
+            |> fun m -> SynMemberDefn.Member (m, range0)
+
+        let fields =
+            let extras =
+                if inherits.Contains KnownInheritance.IDisposable then
+                    [
+                        SynField.Create (
+                            SynType.CreateFun (SynType.CreateUnit, SynType.CreateUnit),
+                            Ident.Create "Dispose",
+                            xmldoc = PreXmlDoc.Create " Implementation of IDisposable.Dispose"
                        )
-                    ),
-                    range0,
-                    DebugPointAtBinding.Yes range0,
-                    { SynExpr.synBindingTriviaZero true with
-                        LeadingKeyword = SynLeadingKeyword.StaticMember (range0, range0)
-                    }
-                ),
-                range0
-            )
+                    ]
+                else
+                    []
+
+            extras @ fields

        let interfaceMembers =
            let members =
@@ -150,7 +140,9 @@ module internal InterfaceMockGenerator =
                                                |> List.mapi (fun i arg ->
                                                    arg.Args
                                                    |> List.mapi (fun j arg ->
-                                                        SynArgInfo.CreateIdString $"arg_%i{i}_%i{j}"
+                                                        match arg.Type with
+                                                        | UnitType -> SynArgInfo.SynArgInfo ([], false, None)
+                                                        | _ -> SynArgInfo.CreateIdString $"arg_%i{i}_%i{j}"
                                                    )
                                                )
                                        ],
@@ -165,16 +157,24 @@ module internal InterfaceMockGenerator =
                        |> List.mapi (fun i tupledArgs ->
                            let args =
                                tupledArgs.Args
-                                |> List.mapi (fun j _ -> SynPat.CreateNamed (Ident.Create $"arg_%i{i}_%i{j}"))
+                                |> List.mapi (fun j ty ->
+                                    match ty.Type with
+                                    | UnitType -> SynPat.Const (SynConst.Unit, range0)
+                                    | _ -> SynPat.CreateNamed (Ident.Create $"arg_%i{i}_%i{j}")
+                                )

-                            SynPat.Tuple (false, args, List.replicate (args.Length - 1) range0, range0)
-                            |> SynPat.CreateParen
+                            match args with
+                            | [] -> failwith "somehow got no args at all"
+                            | [ arg ] -> arg
+                            | args ->
+                                SynPat.Tuple (false, args, List.replicate (args.Length - 1) range0, range0)
+                                |> SynPat.CreateParen
                            |> fun i -> if tupledArgs.HasParen then SynPat.Paren (i, range0) else i
                        )

                    let headPat =
                        SynPat.LongIdent (
-                            SynLongIdent.CreateFromLongIdent [ Ident.Create "this" ; memberInfo.Identifier ],
+                            SynLongIdent.create [ Ident.Create "this" ; memberInfo.Identifier ],
                            None,
                            None,
                            SynArgPats.Pats headArgs,
@@ -187,7 +187,11 @@ module internal InterfaceMockGenerator =
                            memberInfo.Args
                            |> List.mapi (fun i args ->
                                args.Args
-                                |> List.mapi (fun j args -> SynExpr.CreateIdentString $"arg_%i{i}_%i{j}")
+                                |> List.mapi (fun j arg ->
+                                    match arg.Type with
+                                    | UnitType -> SynExpr.CreateConst ()
+                                    | _ -> SynExpr.createIdent $"arg_%i{i}_%i{j}"
+                                )
                                |> SynExpr.CreateParenedTuple
                            )

@@ -197,13 +201,9 @@ module internal InterfaceMockGenerator =

                        (last, rest)
                        ||> List.fold (fun trail next -> SynExpr.CreateApp (next, trail))
-                        |> fun args ->
-                            SynExpr.CreateApp (
-                                SynExpr.CreateLongIdent (
-                                    SynLongIdent.CreateFromLongIdent [ Ident.Create "this" ; memberInfo.Identifier ]
-                                ),
-                                args
-                            )
+                        |> SynExpr.applyFunction (
+                            SynExpr.createLongIdent' [ Ident.Create "this" ; memberInfo.Identifier ]
+                        )

                    SynMemberDefn.Member (
                        SynBinding.SynBinding (
@@ -230,8 +230,7 @@ module internal InterfaceMockGenerator =
                )

            let interfaceName =
-                let baseName =
-                    SynType.CreateLongIdent (SynLongIdent.CreateFromLongIdent interfaceType.Name)
+                let baseName = SynType.createLongIdent interfaceType.Name

                match interfaceType.Generics with
                | None -> baseName
@@ -241,17 +240,9 @@ module internal InterfaceMockGenerator =
                        | SynTyparDecls.PostfixList (decls, _, _) -> decls
                        | SynTyparDecls.PrefixList (decls, _) -> decls
                        | SynTyparDecls.SinglePrefix (decl, _) -> [ decl ]
-                        |> List.map (fun (SynTyparDecl (_, typar)) -> SynType.Var (typar, range0))
+                        |> List.map (fun (SynTyparDecl (_, typar)) -> SynType.var typar)

-                    SynType.App (
-                        baseName,
-                        Some range0,
-                        generics,
-                        List.replicate (generics.Length - 1) range0,
-                        Some range0,
-                        false,
-                        range0
-                    )
+                    SynType.app' baseName generics

            SynMemberDefn.Interface (interfaceName, Some range0, Some members, range0)

@@ -264,11 +255,35 @@ module internal InterfaceMockGenerator =
            | Some (SynAccess.Internal _), _ -> SynAccess.Internal range0
            | Some (SynAccess.Private _), _ -> SynAccess.Private range0

+        let extraInterfaces =
+            inherits
+            |> Seq.map (fun inheritance ->
+                match inheritance with
+                | KnownInheritance.IDisposable ->
+                    let binding =
+                        SynBinding.basic
+                            (SynLongIdent.createS' [ "this" ; "Dispose" ])
+                            [ SynPat.CreateConst SynConst.Unit ]
+                            (SynExpr.CreateApp (SynExpr.createLongIdent [ "this" ; "Dispose" ], SynExpr.CreateUnit))
+                        |> SynBinding.withReturnAnnotation (SynType.Unit ())
+                        |> SynBinding.makeInstanceMember
+
+                    let mem = SynMemberDefn.Member (binding, range0)
+
+                    SynMemberDefn.Interface (
+                        SynType.CreateLongIdent (SynLongIdent.createS' [ "System" ; "IDisposable" ]),
+                        Some range0,
+                        Some [ mem ],
+                        range0
+                    )
+            )
+            |> Seq.toList
+
        let record =
            {
                Name = Ident.Create name
                Fields = fields
-                Members = Some [ constructor ; interfaceMembers ]
+                Members = Some ([ constructor ; interfaceMembers ] @ extraInterfaces)
                XmlDoc = Some xmlDoc
                Generics = interfaceType.Generics
                Accessibility = Some access
@@ -280,7 +295,7 @@ module internal InterfaceMockGenerator =

    let private buildType (x : ParameterInfo) : SynType =
        if x.IsOptional then
-            SynType.App (SynType.CreateLongIdent "option", Some range0, [ x.Type ], [], Some range0, false, range0)
+            SynType.app "option" [ x.Type ]
        else
            x.Type

@@ -326,14 +341,13 @@ module internal InterfaceMockGenerator =
            |> _.idText
            |> fun s ->
                if s.StartsWith 'I' && s.Length > 1 && Char.IsUpper s.[1] then
-                    s.[1..]
+                    s.Substring 1
                else
                    s
            |> fun s -> s + "Mock"

        let typeDecl = createType spec name interfaceType docString fields

-
        SynModuleOrNamespace.CreateNamespace (
            namespaceId,
            decls = (opens |> List.map SynModuleDecl.CreateOpen) @ [ typeDecl ]
--- a/WoofWare.Myriad.Plugins/JsonParseGenerator.fs
+++ b/WoofWare.Myriad.Plugins/JsonParseGenerator.fs
@@ -30,38 +30,34 @@ module internal JsonParseGenerator =
    /// (match {indexed} with | null -> raise (System.Collections.Generic.KeyNotFoundException ()) | v -> v)
    let assertNotNull (propertyName : SynExpr) (indexed : SynExpr) =
        let raiseExpr =
-            SynExpr.CreateApp (
-                SynExpr.CreateIdentString "raise",
-                SynExpr.CreateParen (
-                    SynExpr.CreateApp (
-                        SynExpr.CreateLongIdent (
-                            SynLongIdent.Create [ "System" ; "Collections" ; "Generic" ; "KeyNotFoundException" ]
-                        ),
-                        SynExpr.CreateParen (
-                            SynExpr.CreateApp (
-                                SynExpr.CreateApp (
-                                    SynExpr.CreateIdentString "sprintf",
-                                    SynExpr.CreateConstString "Required key '%s' not found on JSON object"
-                                ),
-                                SynExpr.CreateParen propertyName
-                            )
-                        )
-                    )
-                )
+            SynExpr.applyFunction
+                (SynExpr.createIdent "sprintf")
+                (SynExpr.CreateConst "Required key '%s' not found on JSON object")
+            |> SynExpr.applyTo (SynExpr.paren propertyName)
+            |> SynExpr.paren
+            |> SynExpr.applyFunction (
+                SynExpr.createLongIdent [ "System" ; "Collections" ; "Generic" ; "KeyNotFoundException" ]
            )
+            |> SynExpr.paren
+            |> SynExpr.applyFunction (SynExpr.createIdent "raise")

-        SynExpr.CreateMatch (
-            indexed,
-            [
-                SynMatchClause.Create (SynPat.CreateNull, None, raiseExpr)
-                SynMatchClause.Create (SynPat.CreateNamed (Ident.Create "v"), None, SynExpr.CreateIdentString "v")
-            ]
-        )
-        |> SynExpr.CreateParen
+        [
+            SynMatchClause.create SynPat.CreateNull raiseExpr
+            SynMatchClause.create (SynPat.named "v") (SynExpr.createIdent "v")
+        ]
+        |> SynExpr.createMatch indexed
+        |> SynExpr.paren

    /// {node}.AsValue().GetValue<{typeName}> ()
    /// If `propertyName` is Some, uses `assertNotNull {node}` instead of `{node}`.
    let asValueGetValue (propertyName : SynExpr option) (typeName : string) (node : SynExpr) : SynExpr =
+        match propertyName with
+        | None -> node
+        | Some propertyName -> assertNotNull propertyName node
+        |> SynExpr.callMethod "AsValue"
+        |> SynExpr.callGenericMethod' "GetValue" typeName
+
+    let asValueGetValueIdent (propertyName : SynExpr option) (typeName : LongIdent) (node : SynExpr) : SynExpr =
        match propertyName with
        | None -> node
        | Some propertyName -> assertNotNull propertyName node
@@ -78,10 +74,8 @@ module internal JsonParseGenerator =

    /// {type}.jsonParse {node}
    let typeJsonParse (typeName : LongIdent) (node : SynExpr) : SynExpr =
-        SynExpr.CreateApp (
-            SynExpr.CreateLongIdent (SynLongIdent.CreateFromLongIdent (typeName @ [ Ident.Create "jsonParse" ])),
-            node
-        )
+        node
+        |> SynExpr.applyFunction (SynExpr.createLongIdent' (typeName @ [ Ident.create "jsonParse" ]))

    /// collectionType is e.g. "List"; we'll be calling `ofSeq` on it.
    /// body is the body of a lambda which takes a parameter `elt`.
@@ -100,64 +94,40 @@ module internal JsonParseGenerator =
        | Some propertyName -> assertNotNull propertyName node
        |> SynExpr.callMethod "AsArray"
        |> SynExpr.pipeThroughFunction (
-            SynExpr.CreateApp (
-                SynExpr.CreateLongIdent (SynLongIdent.Create [ "Seq" ; "map" ]),
-                SynExpr.createLambda "elt" body
-            )
+            SynExpr.applyFunction (SynExpr.createLongIdent [ "Seq" ; "map" ]) (SynExpr.createLambda "elt" body)
        )
-        |> SynExpr.pipeThroughFunction (SynExpr.CreateLongIdent (SynLongIdent.Create [ collectionType ; "ofSeq" ]))
+        |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ collectionType ; "ofSeq" ])

    /// match {node} with | null -> None | v -> {body} |> Some
    /// Use the variable `v` to get access to the `Some`.
    let createParseLineOption (node : SynExpr) (body : SynExpr) : SynExpr =
-        let body = SynExpr.pipeThroughFunction (SynExpr.CreateIdentString "Some") body
+        let body = SynExpr.pipeThroughFunction (SynExpr.createIdent "Some") body

-        SynExpr.CreateMatch (
-            node,
-            [
-                SynMatchClause.Create (SynPat.CreateNull, None, SynExpr.CreateIdent (Ident.Create "None"))
-                SynMatchClause.Create (SynPat.CreateNamed (Ident.Create "v"), None, body)
-            ]
-        )
+        [
+            SynMatchClause.create SynPat.CreateNull (SynExpr.createIdent "None")
+            SynMatchClause.create (SynPat.named "v") body
+        ]
+        |> SynExpr.createMatch node

    /// Given e.g. "float", returns "System.Double.Parse"
    let parseFunction (typeName : string) : LongIdent =
-        List.append (SynExpr.qualifyPrimitiveType typeName) [ Ident.Create "Parse" ]
+        let qualified =
+            match Primitives.qualifyType typeName with
+            | Some x -> x
+            | None -> failwith $"Could not recognise type %s{typeName} as a primitive."
+
+        List.append qualified [ Ident.create "Parse" ]

    /// fun kvp -> let key = {key(kvp)} in let value = {value(kvp)} in (key, value))
    /// The inputs will be fed with appropriate SynExprs to apply them to the `kvp.Key` and `kvp.Value` args.
    let dictionaryMapper (key : SynExpr -> SynExpr) (value : SynExpr -> SynExpr) : SynExpr =
-        let keyArg =
-            SynExpr.CreateLongIdent (SynLongIdent.Create [ "kvp" ; "Key" ])
-            |> SynExpr.CreateParen
+        let keyArg = SynExpr.createLongIdent [ "kvp" ; "Key" ] |> SynExpr.paren

-        let valueArg =
-            SynExpr.CreateLongIdent (SynLongIdent.Create [ "kvp" ; "Value" ])
-            |> SynExpr.CreateParen
+        let valueArg = SynExpr.createLongIdent [ "kvp" ; "Value" ] |> SynExpr.paren

-        SynExpr.LetOrUse (
-            false,
-            false,
-            [
-                SynBinding.Let (pattern = SynPat.CreateNamed (Ident.Create "key"), expr = key keyArg)
-            ],
-            SynExpr.LetOrUse (
-                false,
-                false,
-                [
-                    SynBinding.Let (pattern = SynPat.CreateNamed (Ident.Create "value"), expr = value valueArg)
-                ],
-                SynExpr.CreateTuple [ SynExpr.CreateIdentString "key" ; SynExpr.CreateIdentString "value" ],
-                range0,
-                {
-                    InKeyword = None
-                }
-            ),
-            range0,
-            {
-                InKeyword = None
-            }
-        )
+        SynExpr.CreateTuple [ SynExpr.createIdent "key" ; SynExpr.createIdent "value" ]
+        |> SynExpr.createLet [ SynBinding.Let (pattern = SynPat.named "value", expr = value valueArg) ]
+        |> SynExpr.createLet [ SynBinding.Let (pattern = SynPat.named "key", expr = key keyArg) ]
        |> SynExpr.createLambda "kvp"

    /// A conforming JSON object has only strings as keys. But it would be reasonable to allow the user
@@ -167,7 +137,7 @@ module internal JsonParseGenerator =
        | String -> key
        | Uri ->
            key
-            |> SynExpr.pipeThroughFunction (SynExpr.CreateLongIdent (SynLongIdent.Create [ "System" ; "Uri" ]))
+            |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "System" ; "Uri" ])
        | _ ->
            failwithf
                $"Unable to parse the key type %+A{desiredType} of a JSON object. Keys are strings, and this plugin does not know how to convert to that from a string."
@@ -187,25 +157,19 @@ module internal JsonParseGenerator =
        | DateOnly ->
            node
            |> asValueGetValue propertyName "string"
-            |> SynExpr.pipeThroughFunction (
-                SynExpr.CreateLongIdent (SynLongIdent.Create [ "System" ; "DateOnly" ; "Parse" ])
-            )
+            |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "System" ; "DateOnly" ; "Parse" ])
        | Uri ->
            node
            |> asValueGetValue propertyName "string"
-            |> SynExpr.pipeThroughFunction (SynExpr.CreateLongIdent (SynLongIdent.Create [ "System" ; "Uri" ]))
+            |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "System" ; "Uri" ])
        | Guid ->
            node
            |> asValueGetValue propertyName "string"
-            |> SynExpr.pipeThroughFunction (
-                SynExpr.CreateLongIdent (SynLongIdent.Create [ "System" ; "Guid" ; "Parse" ])
-            )
+            |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "System" ; "Guid" ; "Parse" ])
        | DateTime ->
            node
            |> asValueGetValue propertyName "string"
-            |> SynExpr.pipeThroughFunction (
-                SynExpr.CreateLongIdent (SynLongIdent.Create [ "System" ; "DateTime" ; "Parse" ])
-            )
+            |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "System" ; "DateTime" ; "Parse" ])
        | NumberType typeName ->
            let basic = asValueGetValue propertyName typeName node

@@ -213,105 +177,92 @@ module internal JsonParseGenerator =
            | None -> basic
            | Some option ->
                let cond =
-                    SynExpr.DotGet (
-                        SynExpr.CreateIdentString "exc",
-                        range0,
-                        SynLongIdent.CreateString "Message",
-                        range0
-                    )
-                    |> SynExpr.callMethodArg
-                        "Contains"
-                        (SynExpr.CreateConst (SynConst.CreateString "cannot be converted to"))
+                    SynExpr.DotGet (SynExpr.createIdent "exc", range0, SynLongIdent.createS "Message", range0)
+                    |> SynExpr.callMethodArg "Contains" (SynExpr.CreateConst "cannot be converted to")

                let handler =
                    asValueGetValue propertyName "string" node
-                    |> SynExpr.pipeThroughFunction (
-                        SynExpr.CreateLongIdent (SynLongIdent.CreateFromLongIdent (parseFunction typeName))
-                    )
+                    |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent' (parseFunction typeName))
                    |> SynExpr.ifThenElse
                        (SynExpr.equals
                            option
-                            (SynExpr.CreateLongIdent (
-                                SynLongIdent.Create
-                                    [
-                                        "System"
-                                        "Text"
-                                        "Json"
-                                        "Serialization"
-                                        "JsonNumberHandling"
-                                        "AllowReadingFromString"
-                                    ]
-                            )))
+                            (SynExpr.createLongIdent
+                                [
+                                    "System"
+                                    "Text"
+                                    "Json"
+                                    "Serialization"
+                                    "JsonNumberHandling"
+                                    "AllowReadingFromString"
+                                ]))
                        SynExpr.reraise
                    |> SynExpr.ifThenElse cond SynExpr.reraise

                basic
                |> SynExpr.pipeThroughTryWith
                    (SynPat.IsInst (
-                        SynType.LongIdent (SynLongIdent.Create [ "System" ; "InvalidOperationException" ]),
+                        SynType.LongIdent (SynLongIdent.createS' [ "System" ; "InvalidOperationException" ]),
                        range0
                    ))
                    handler
-        | PrimitiveType typeName -> asValueGetValue propertyName typeName node
+        | PrimitiveType typeName -> asValueGetValueIdent propertyName typeName node
        | OptionType ty ->
-            parseNode None options ty (SynExpr.CreateIdentString "v")
+            parseNode None options ty (SynExpr.createIdent "v")
            |> createParseLineOption node
        | ListType ty ->
-            parseNode None options ty (SynExpr.CreateLongIdent (SynLongIdent.CreateString "elt"))
+            parseNode None options ty (SynExpr.createIdent "elt")
            |> asArrayMapped propertyName "List" node
        | ArrayType ty ->
-            parseNode None options ty (SynExpr.CreateLongIdent (SynLongIdent.CreateString "elt"))
+            parseNode None options ty (SynExpr.createIdent "elt")
            |> asArrayMapped propertyName "Array" node
        | IDictionaryType (keyType, valueType) ->
            node
            |> asObject propertyName
            |> SynExpr.pipeThroughFunction (
-                SynExpr.CreateApp (
-                    SynExpr.CreateLongIdent (SynLongIdent.Create [ "Seq" ; "map" ]),
-                    dictionaryMapper (parseKeyString keyType) (parseNode None options valueType)
-                )
+                SynExpr.applyFunction
+                    (SynExpr.createLongIdent [ "Seq" ; "map" ])
+                    (dictionaryMapper (parseKeyString keyType) (parseNode None options valueType))
            )
-            |> SynExpr.pipeThroughFunction (SynExpr.CreateLongIdent (SynLongIdent.Create [ "dict" ]))
+            |> SynExpr.pipeThroughFunction (SynExpr.createIdent "dict")
        | DictionaryType (keyType, valueType) ->
            node
            |> asObject propertyName
            |> SynExpr.pipeThroughFunction (
-                SynExpr.CreateApp (
-                    SynExpr.CreateLongIdent (SynLongIdent.Create [ "Seq" ; "map" ]),
-                    dictionaryMapper (parseKeyString keyType) (parseNode None options valueType)
-                )
+                SynExpr.applyFunction
+                    (SynExpr.createLongIdent [ "Seq" ; "map" ])
+                    (dictionaryMapper (parseKeyString keyType) (parseNode None options valueType))
            )
            |> SynExpr.pipeThroughFunction (
-                SynExpr.CreateApp (
-                    SynExpr.CreateLongIdent (SynLongIdent.Create [ "Seq" ; "map" ]),
-                    SynExpr.CreateLongIdent (
-                        SynLongIdent.Create [ "System" ; "Collections" ; "Generic" ; "KeyValuePair" ]
-                    )
-                )
+                SynExpr.applyFunction
+                    (SynExpr.createLongIdent [ "Seq" ; "map" ])
+                    (SynExpr.createLongIdent [ "System" ; "Collections" ; "Generic" ; "KeyValuePair" ])
            )
            |> SynExpr.pipeThroughFunction (
-                SynExpr.CreateLongIdent (SynLongIdent.Create [ "System" ; "Collections" ; "Generic" ; "Dictionary" ])
+                SynExpr.createLongIdent [ "System" ; "Collections" ; "Generic" ; "Dictionary" ]
            )
        | IReadOnlyDictionaryType (keyType, valueType) ->
            node
            |> asObject propertyName
            |> SynExpr.pipeThroughFunction (
-                SynExpr.CreateApp (
-                    SynExpr.CreateLongIdent (SynLongIdent.Create [ "Seq" ; "map" ]),
-                    dictionaryMapper (parseKeyString keyType) (parseNode None options valueType)
-                )
+                SynExpr.applyFunction
+                    (SynExpr.createLongIdent [ "Seq" ; "map" ])
+                    (dictionaryMapper (parseKeyString keyType) (parseNode None options valueType))
            )
-            |> SynExpr.pipeThroughFunction (SynExpr.CreateLongIdent (SynLongIdent.Create [ "readOnlyDict" ]))
+            |> SynExpr.pipeThroughFunction (SynExpr.createIdent "readOnlyDict")
        | MapType (keyType, valueType) ->
            node
            |> asObject propertyName
            |> SynExpr.pipeThroughFunction (
-                SynExpr.CreateApp (
-                    SynExpr.CreateLongIdent (SynLongIdent.Create [ "Seq" ; "map" ]),
-                    dictionaryMapper (parseKeyString keyType) (parseNode None options valueType)
-                )
+                SynExpr.applyFunction
+                    (SynExpr.createLongIdent [ "Seq" ; "map" ])
+                    (dictionaryMapper (parseKeyString keyType) (parseNode None options valueType))
            )
-            |> SynExpr.pipeThroughFunction (SynExpr.CreateLongIdent (SynLongIdent.Create [ "Map" ; "ofSeq" ]))
+            |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "Map" ; "ofSeq" ])
+        | BigInt ->
+            node
+            |> SynExpr.callMethod "ToJsonString"
+            |> SynExpr.paren
+            |> SynExpr.applyFunction (SynExpr.createLongIdent [ "System" ; "Numerics" ; "BigInteger" ; "Parse" ])
        | _ ->
            // Let's just hope that we've also got our own type annotation!
            let typeName =
@@ -327,9 +278,8 @@ module internal JsonParseGenerator =
    /// propertyName is probably a string literal, but it could be a [<Literal>] variable
    /// The result of this function is the body of a let-binding (not including the LHS of that let-binding).
    let createParseRhs (options : JsonParseOption) (propertyName : SynExpr) (fieldType : SynType) : SynExpr =
-        SynExpr.CreateIdentString "node"
-        |> SynExpr.index propertyName
-        |> parseNode (Some propertyName) options fieldType
+        let objectToParse = SynExpr.createIdent "node" |> SynExpr.index propertyName
+        parseNode (Some propertyName) options fieldType objectToParse

    let isJsonNumberHandling (literal : LongIdent) : bool =
        match List.rev literal |> List.map (fun ident -> ident.idText) with
@@ -340,270 +290,262 @@ module internal JsonParseGenerator =
        | [ _ ; "JsonNumberHandling" ; "Serialization" ; "Json" ; "Text" ; "System" ] -> true
        | _ -> false

-    let createMaker (spec : JsonParseOutputSpec) (typeName : LongIdent) (fields : SynField list) =
-        let xmlDoc = PreXmlDoc.Create " Parse from a JSON node."
+    /// `populateNode` will be inserted before we return the `node` variable.
+    ///
+    /// That is, we give you access to a `JsonNode` called `node`,
+    /// and you must return a `typeName`.
+    let scaffolding (spec : JsonParseOutputSpec) (typeName : LongIdent) (functionBody : SynExpr) : SynModuleDecl =
+        let xmlDoc = PreXmlDoc.create "Parse from a JSON node."

-        let returnInfo =
-            SynBindingReturnInfo.Create (SynType.LongIdent (SynLongIdent.CreateFromLongIdent typeName))
+        let returnInfo = SynType.createLongIdent typeName

-        let inputArg = Ident.Create "node"
-        let functionName = Ident.Create "jsonParse"
+        let inputArg = "node"
+        let functionName = Ident.create "jsonParse"

-        let inputVal =
-            let memberFlags =
-                if spec.ExtensionMethods then
-                    {
-                        SynMemberFlags.IsInstance = false
-                        SynMemberFlags.IsDispatchSlot = false
-                        SynMemberFlags.IsOverrideOrExplicitImpl = false
-                        SynMemberFlags.IsFinal = false
-                        SynMemberFlags.GetterOrSetterIsCompilerGenerated = false
-                        SynMemberFlags.MemberKind = SynMemberKind.Member
-                    }
-                    |> Some
-                else
-                    None
+        let arg =
+            SynPat.named inputArg
+            |> SynPat.annotateType (SynType.createLongIdent' [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonNode" ])

-            let thisIdOpt = if spec.ExtensionMethods then None else Some inputArg
+        if spec.ExtensionMethods then
+            let binding =
+                SynBinding.basic (SynLongIdent.createI functionName) [ arg ] functionBody
+                |> SynBinding.withXmlDoc xmlDoc
+                |> SynBinding.withReturnAnnotation returnInfo
+                |> SynMemberDefn.staticMember

-            SynValData.SynValData (
-                memberFlags,
-                SynValInfo.SynValInfo ([ [ SynArgInfo.CreateId functionName ] ], SynArgInfo.Empty),
-                thisIdOpt
-            )
+            let componentInfo =
+                SynComponentInfo.createLong typeName
+                |> SynComponentInfo.withDocString (PreXmlDoc.Create " Extension methods for JSON parsing")

+            let containingType =
+                SynTypeDefnRepr.augmentation ()
+                |> SynTypeDefn.create componentInfo
+                |> SynTypeDefn.withMemberDefns [ binding ]
+
+            SynModuleDecl.Types ([ containingType ], range0)
+        else
+            SynBinding.basic (SynLongIdent.createI functionName) [ arg ] functionBody
+            |> SynBinding.withXmlDoc xmlDoc
+            |> SynBinding.withReturnAnnotation returnInfo
+            |> List.singleton
+            |> SynModuleDecl.CreateLet
+
+    let getParseOptions (fieldAttrs : SynAttribute list) =
+        (JsonParseOption.None, fieldAttrs)
+        ||> List.fold (fun options attr ->
+            if attr.TypeName.AsString.EndsWith ("JsonNumberHandling", StringComparison.Ordinal) then
+                let qualifiedEnumValue =
+                    match SynExpr.stripOptionalParen attr.ArgExpr with
+                    | SynExpr.LongIdent (_, SynLongIdent (ident, _, _), _, _) when isJsonNumberHandling ident ->
+                        // Make sure it's fully qualified
+                        SynExpr.createLongIdent
+                            [
+                                "System"
+                                "Text"
+                                "Json"
+                                "Serialization"
+                                "JsonNumberHandling"
+                                "AllowReadingFromString"
+                            ]
+                    | _ -> attr.ArgExpr
+
+                {
+                    JsonNumberHandlingArg = Some qualifiedEnumValue
+                }
+            else
+                options
+        )
+
+
+    let createRecordMaker (spec : JsonParseOutputSpec) (typeName : LongIdent) (fields : SynFieldData<Ident> list) =
        let assignments =
            fields
-            |> List.map (fun (SynField (attrs, _, id, fieldType, _, _, _, _, _)) ->
-                let id =
-                    match id with
-                    | None -> failwith "didn't get an ID on field"
-                    | Some id -> id
-
-                let attrs = attrs |> List.collect (fun l -> l.Attributes)
-
+            |> List.mapi (fun i fieldData ->
                let propertyNameAttr =
-                    attrs
+                    fieldData.Attrs
                    |> List.tryFind (fun attr ->
                        attr.TypeName.AsString.EndsWith ("JsonPropertyName", StringComparison.Ordinal)
                    )

-                let options =
-                    (JsonParseOption.None, attrs)
-                    ||> List.fold (fun options attr ->
-                        if attr.TypeName.AsString.EndsWith ("JsonNumberHandling", StringComparison.Ordinal) then
-                            let qualifiedEnumValue =
-                                match SynExpr.stripOptionalParen attr.ArgExpr with
-                                | SynExpr.LongIdent (_, SynLongIdent (ident, _, _), _, _) when
-                                    isJsonNumberHandling ident
-                                    ->
-                                    // Make sure it's fully qualified
-                                    SynExpr.CreateLongIdent (
-                                        SynLongIdent.Create
-                                            [
-                                                "System"
-                                                "Text"
-                                                "Json"
-                                                "Serialization"
-                                                "JsonNumberHandling"
-                                                "AllowReadingFromString"
-                                            ]
-                                    )
-                                | _ -> attr.ArgExpr
-
-                            {
-                                JsonNumberHandlingArg = Some qualifiedEnumValue
-                            }
-                        else
-                            options
-                    )
+                let options = getParseOptions fieldData.Attrs

                let propertyName =
                    match propertyNameAttr with
                    | None ->
-                        let sb = StringBuilder id.idText.Length
-                        sb.Append (Char.ToLowerInvariant id.idText.[0]) |> ignore
+                        let sb = StringBuilder fieldData.Ident.idText.Length

-                        if id.idText.Length > 1 then
-                            sb.Append id.idText.[1..] |> ignore
+                        sb.Append (Char.ToLowerInvariant fieldData.Ident.idText.[0])
+                        |> ignore<StringBuilder>

-                        sb.ToString () |> SynConst.CreateString |> SynExpr.CreateConst
+                        if fieldData.Ident.idText.Length > 1 then
+                            sb.Append (fieldData.Ident.idText.Substring 1) |> ignore<StringBuilder>
+
+                        sb.ToString () |> SynExpr.CreateConst
                    | Some name -> name.ArgExpr

-                let pattern =
-                    SynPat.LongIdent (
-                        SynLongIdent.CreateFromLongIdent [ id ],
-                        None,
-                        None,
-                        SynArgPats.Empty,
-                        None,
-                        range0
-                    )
-
-                SynBinding.Let (
-                    isInline = false,
-                    isMutable = false,
-                    expr = createParseRhs options propertyName fieldType,
-                    valData = inputVal,
-                    pattern = pattern
-                )
+                createParseRhs options propertyName fieldData.Type
+                |> SynBinding.basic (SynLongIdent.createS $"arg_%i{i}") []
            )

        let finalConstruction =
            fields
-            |> List.map (fun (SynField (_, _, id, _, _, _, _, _, _)) ->
-                let id =
-                    match id with
-                    | None -> failwith "Expected record field to have an identifying name"
-                    | Some id -> id
-
-                (SynLongIdent.CreateFromLongIdent [ id ], true),
-                Some (SynExpr.CreateLongIdent (SynLongIdent.CreateFromLongIdent [ id ]))
+            |> List.mapi (fun i fieldData ->
+                (SynLongIdent.createI fieldData.Ident, true), Some (SynExpr.createIdent $"arg_%i{i}")
            )
            |> AstHelper.instantiateRecord

-        let assignments =
-            (finalConstruction, assignments)
-            ||> List.fold (fun final assignment ->
-                SynExpr.LetOrUse (
-                    false,
-                    false,
-                    [ assignment ],
-                    final,
-                    range0,
-                    {
-                        InKeyword = None
-                    }
-                )
-            )
+        (finalConstruction, assignments)
+        ||> List.fold (fun final assignment -> SynExpr.createLet [ assignment ] final)

-        let pattern =
-            SynPat.LongIdent (
-                SynLongIdent.CreateFromLongIdent [ functionName ],
-                None,
-                None,
-                SynArgPats.Pats
-                    [
-                        SynPat.CreateTyped (
-                            SynPat.CreateNamed inputArg,
-                            SynType.LongIdent (
-                                SynLongIdent.Create [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonNode" ]
-                            )
-                        )
-                        |> SynPat.CreateParen
-                    ],
-                None,
-                range0
-            )
+    let createUnionMaker (spec : JsonParseOutputSpec) (typeName : LongIdent) (fields : UnionCase<Ident> list) =
+        fields
+        |> List.map (fun case ->
+            let propertyName = JsonSerializeGenerator.getPropertyName case.Ident case.Attrs

-        if spec.ExtensionMethods then
-            let binding =
-                SynBinding.SynBinding (
+            let body =
+                if case.Fields.IsEmpty then
+                    SynExpr.createLongIdent' (typeName @ [ case.Ident ])
+                else
+                    case.Fields
+                    |> List.map (fun field ->
+                        let propertyName = JsonSerializeGenerator.getPropertyName field.Ident field.Attrs
+                        let options = getParseOptions field.Attrs
+                        createParseRhs options propertyName field.Type
+                    )
+                    |> SynExpr.CreateParenedTuple
+                    |> SynExpr.applyFunction (SynExpr.createLongIdent' (typeName @ [ case.Ident ]))
+                    |> SynExpr.createLet
+                        [
+                            SynExpr.index (SynExpr.CreateConst "data") (SynExpr.createIdent "node")
+                            |> assertNotNull (SynExpr.CreateConst "data")
+                            |> SynBinding.basic (SynLongIdent.createS "node") []
+                        ]
+
+            match propertyName with
+            | SynExpr.Const (synConst, _) ->
+                SynMatchClause.SynMatchClause (
+                    SynPat.CreateConst synConst,
                    None,
-                    SynBindingKind.Normal,
-                    false,
-                    false,
-                    [],
-                    xmlDoc,
-                    inputVal,
-                    pattern,
-                    Some returnInfo,
-                    assignments,
+                    body,
                    range0,
-                    DebugPointAtBinding.NoneAtInvisible,
+                    DebugPointAtTarget.Yes,
                    {
-                        LeadingKeyword = SynLeadingKeyword.StaticMember (range0, range0)
-                        InlineKeyword = None
-                        EqualsRange = Some range0
+                        ArrowRange = Some range0
+                        BarRange = Some range0
                    }
                )
+            | _ ->
+                SynMatchClause.create (SynPat.named "x") body
+                |> SynMatchClause.withWhere (SynExpr.equals (SynExpr.createIdent "x") propertyName)
+        )
+        |> fun l ->
+            l
+            @ [
+                let fail =
+                    SynExpr.plus (SynExpr.CreateConst "Unrecognised 'type' field value: ") (SynExpr.createIdent "v")
+                    |> SynExpr.paren
+                    |> SynExpr.applyFunction (SynExpr.createIdent "failwith")

-            let mem = SynMemberDefn.Member (binding, range0)
-
-            let containingType =
-                SynTypeDefn.SynTypeDefn (
-                    SynComponentInfo.Create (typeName, xmldoc = PreXmlDoc.Create " Extension methods for JSON parsing"),
-                    SynTypeDefnRepr.ObjectModel (SynTypeDefnKind.Augmentation range0, [], range0),
-                    [ mem ],
+                SynMatchClause.SynMatchClause (
+                    SynPat.named "v",
                    None,
+                    fail,
                    range0,
+                    DebugPointAtTarget.Yes,
                    {
-                        LeadingKeyword = SynTypeDefnLeadingKeyword.Type range0
-                        EqualsRange = None
-                        WithKeyword = None
+                        ArrowRange = Some range0
+                        BarRange = Some range0
                    }
                )
+            ]
+        |> SynExpr.createMatch (SynExpr.createIdent "ty")
+        |> SynExpr.createLet
+            [
+                let property = SynExpr.CreateConst "type"

-            SynModuleDecl.Types ([ containingType ], range0)
-        else
-            let binding =
-                SynBinding.Let (
-                    isInline = false,
-                    isMutable = false,
-                    xmldoc = xmlDoc,
-                    returnInfo = returnInfo,
-                    expr = assignments,
-                    valData = inputVal,
-                    pattern = pattern
+                SynExpr.createIdent "node"
+                |> SynExpr.index property
+                |> assertNotNull property
+                |> SynExpr.pipeThroughFunction (
+                    SynExpr.createLambda
+                        "v"
+                        (SynExpr.callGenericMethod "GetValue" [ Ident.create "string" ] (SynExpr.createIdent "v"))
                )
+                |> SynBinding.basic (SynLongIdent.createS "ty") []
+            ]

-            SynModuleDecl.CreateLet [ binding ]
-
-    let createRecordModule (namespaceId : LongIdent) (spec : JsonParseOutputSpec) (typeDefn : SynTypeDefn) =
+    let createModule (namespaceId : LongIdent) (spec : JsonParseOutputSpec) (typeDefn : SynTypeDefn) =
        let (SynTypeDefn (synComponentInfo, synTypeDefnRepr, _members, _implicitCtor, _, _)) =
            typeDefn

-        let (SynComponentInfo (_attributes, _typeParams, _constraints, recordId, _, _preferPostfix, _access, _)) =
+        let (SynComponentInfo (_attributes, _typeParams, _constraints, ident, _, _preferPostfix, _access, _)) =
            synComponentInfo

-        match synTypeDefnRepr with
-        | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Record (_accessibility, recordFields, _recordRange), _) ->
+        let attributes =
+            if spec.ExtensionMethods then
+                [ SynAttribute.autoOpen ]
+            else
+                [
+                    SynAttribute.RequireQualifiedAccess ()
+                    SynAttribute.compilationRepresentation
+                ]

-            let decls = [ createMaker spec recordId recordFields ]
+        let xmlDoc =
+            let fullyQualified = ident |> Seq.map (fun i -> i.idText) |> String.concat "."

-            let attributes =
+            let description =
                if spec.ExtensionMethods then
-                    [ SynAttributeList.Create SynAttribute.autoOpen ]
+                    "extension members"
                else
-                    [
-                        SynAttributeList.Create (SynAttribute.RequireQualifiedAccess ())
-                        SynAttributeList.Create SynAttribute.compilationRepresentation
-                    ]
+                    "methods"

-            let xmlDoc =
-                let fullyQualified = recordId |> Seq.map (fun i -> i.idText) |> String.concat "."
+            $" Module containing JSON parsing %s{description} for the %s{fullyQualified} type"
+            |> PreXmlDoc.Create

-                let description =
-                    if spec.ExtensionMethods then
-                        "extension members"
-                    else
-                        "methods"
+        let moduleName =
+            if spec.ExtensionMethods then
+                match ident with
+                | [] -> failwith "unexpectedly got an empty identifier for record name"
+                | ident ->
+                    let expanded =
+                        List.last ident
+                        |> fun i -> i.idText
+                        |> fun s -> s + "JsonParseExtension"
+                        |> Ident.create

-                $" Module containing JSON parsing %s{description} for the %s{fullyQualified} type"
-                |> PreXmlDoc.Create
+                    List.take (List.length ident - 1) ident @ [ expanded ]
+            else
+                ident

-            let moduleName =
-                if spec.ExtensionMethods then
-                    match recordId with
-                    | [] -> failwith "unexpectedly got an empty identifier for record name"
-                    | recordId ->
-                        let expanded =
-                            List.last recordId
-                            |> fun i -> i.idText
-                            |> fun s -> s + "JsonParseExtension"
-                            |> Ident.Create
+        let info =
+            SynComponentInfo.createLong moduleName
+            |> SynComponentInfo.withDocString xmlDoc
+            |> SynComponentInfo.addAttributes attributes

-                        List.take (List.length recordId - 1) recordId @ [ expanded ]
-                else
-                    recordId
+        let decl =
+            match synTypeDefnRepr with
+            | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Record (_accessibility, fields, _range), _) ->
+                let fields = fields |> List.map SynField.extractWithIdent
+                createRecordMaker spec ident fields
+            | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Union (_accessibility, cases, _range), _) ->
+                let optionGet (i : Ident option) =
+                    match i with
+                    | None -> failwith "WoofWare.Myriad requires union cases to have identifiers on each field."
+                    | Some i -> i

-            let info =
-                SynComponentInfo.Create (moduleName, attributes = attributes, xmldoc = xmlDoc)
+                let cases =
+                    cases
+                    |> List.map SynUnionCase.extract
+                    |> List.map (UnionCase.mapIdentFields optionGet)

-            let mdl = SynModuleDecl.CreateNestedModule (info, decls)
+                createUnionMaker spec ident cases
+            | _ -> failwithf "Not a record or union type"

-            SynModuleOrNamespace.CreateNamespace (namespaceId, decls = [ mdl ])
-        | _ -> failwithf "Not a record type"
+        let mdl =
+            [ scaffolding spec ident decl ]
+            |> fun d -> SynModuleDecl.CreateNestedModule (info, d)
+
+        SynModuleOrNamespace.CreateNamespace (namespaceId, decls = [ mdl ])

 /// Myriad generator that provides a method (possibly an extension method) for a record type,
 /// containing a JSON parse function.
@@ -617,10 +559,20 @@ type JsonParseGenerator () =
            let ast, _ =
                Ast.fromFilename context.InputFilename |> Async.RunSynchronously |> Array.head

-            let records = Ast.extractRecords ast
+            let recordsAndUnions =
+                Ast.extractTypeDefn ast
+                |> List.map (fun (name, defns) ->
+                    defns
+                    |> List.choose (fun defn ->
+                        if Ast.isRecord defn then Some defn
+                        elif Ast.isDu defn then Some defn
+                        else None
+                    )
+                    |> fun defns -> name, defns
+                )

-            let namespaceAndRecords =
-                records
+            let namespaceAndTypes =
+                recordsAndUnions
                |> List.choose (fun (ns, types) ->
                    types
                    |> List.choose (fun typeDef ->
@@ -648,13 +600,9 @@ type JsonParseGenerator () =
                )

            let modules =
-                namespaceAndRecords
-                |> List.collect (fun (ns, records) ->
-                    records
-                    |> List.map (fun (record, spec) ->
-                        let recordModule = JsonParseGenerator.createRecordModule ns spec record
-                        recordModule
-                    )
+                namespaceAndTypes
+                |> List.collect (fun (ns, types) ->
+                    types |> List.map (fun (ty, spec) -> JsonParseGenerator.createModule ns spec ty)
                )

            Output.Ast modules
--- a/WoofWare.Myriad.Plugins/JsonSerializeGenerator.fs
+++ b/WoofWare.Myriad.Plugins/JsonSerializeGenerator.fs
@@ -30,9 +30,7 @@ module internal JsonSerializeGenerator =
        | Uri ->
            // JsonValue.Create<type>
            SynExpr.TypeApp (
-                SynExpr.CreateLongIdent (
-                    SynLongIdent.Create [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonValue" ; "Create" ]
-                ),
+                SynExpr.createLongIdent [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonValue" ; "Create" ],
                range0,
                [ fieldType ],
                [],
@@ -42,39 +40,29 @@ module internal JsonSerializeGenerator =
            )
        | OptionType ty ->
            // fun field -> match field with | None -> JsonValue.Create null | Some v -> {serializeNode ty} field
-            SynExpr.CreateMatch (
-                SynExpr.CreateIdentString "field",
-                [
-                    SynMatchClause.Create (
-                        SynPat.CreateLongIdent (SynLongIdent.CreateString "None", []),
-                        None,
-                        // The absolutely galaxy-brained implementation of JsonValue has `JsonValue.Parse "null"`
-                        // identically equal to null. We have to work around this later, but we might as well just
-                        // be efficient here and whip up the null directly.
-                        SynExpr.CreateNull
-                        |> SynExpr.upcast' (
-                            SynType.CreateLongIdent (
-                                SynLongIdent.Create [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonNode" ]
-                            )
-                        )
-                    )
+            [
+                SynMatchClause.Create (
+                    SynPat.CreateLongIdent (SynLongIdent.createS "None", []),
+                    None,
+                    // The absolutely galaxy-brained implementation of JsonValue has `JsonValue.Parse "null"`
+                    // identically equal to null. We have to work around this later, but we might as well just
+                    // be efficient here and whip up the null directly.
+                    SynExpr.CreateNull
+                    |> SynExpr.upcast' (
+                        SynType.createLongIdent' [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonNode" ]

-                    SynMatchClause.Create (
-                        SynPat.CreateLongIdent (
-                            SynLongIdent.CreateString "Some",
-                            [ SynPat.CreateNamed (Ident.Create "field") ]
-                        ),
-                        None,
-                        SynExpr.CreateApp (serializeNode ty, SynExpr.CreateIdentString "field")
-                        |> SynExpr.CreateParen
-                        |> SynExpr.upcast' (
-                            SynType.CreateLongIdent (
-                                SynLongIdent.Create [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonNode" ]
-                            )
-                        )
                    )
-                ]
-            )
+                )
+
+                SynMatchClause.Create (
+                    SynPat.CreateLongIdent (SynLongIdent.createS "Some", [ SynPat.named "field" ]),
+                    None,
+                    SynExpr.applyFunction (serializeNode ty) (SynExpr.createIdent "field")
+                    |> SynExpr.paren
+                    |> SynExpr.upcast' (SynType.createLongIdent' [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonNode" ])
+                )
+            ]
+            |> SynExpr.createMatch (SynExpr.createIdent "field")
            |> SynExpr.createLambda "field"
        | ArrayType ty
        | ListType ty ->
@@ -82,116 +70,85 @@ module internal JsonSerializeGenerator =
            //     let arr = JsonArray ()
            //     for mem in field do arr.Add ({serializeNode} mem)
            //     arr
-            SynExpr.LetOrUse (
-                false,
-                false,
+            [
+                SynExpr.ForEach (
+                    DebugPointAtFor.Yes range0,
+                    DebugPointAtInOrTo.Yes range0,
+                    SeqExprOnly.SeqExprOnly false,
+                    true,
+                    SynPat.named "mem",
+                    SynExpr.createIdent "field",
+                    SynExpr.applyFunction
+                        (SynExpr.CreateLongIdent (SynLongIdent.createS' [ "arr" ; "Add" ]))
+                        (SynExpr.CreateParen (SynExpr.CreateApp (serializeNode ty, SynExpr.createIdent "mem"))),
+                    range0
+                )
+                SynExpr.createIdent "arr"
+            ]
+            |> SynExpr.CreateSequential
+            |> SynExpr.createLet
                [
-                    SynBinding.Let (
-                        pattern = SynPat.CreateNamed (Ident.Create "arr"),
-                        expr =
-                            SynExpr.CreateApp (
-                                SynExpr.CreateLongIdent (
-                                    SynLongIdent.Create [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonArray" ]
-                                ),
-                                SynExpr.CreateConst SynConst.Unit
-                            )
-                    )
-                ],
-                SynExpr.CreateSequential
-                    [
-                        SynExpr.ForEach (
-                            DebugPointAtFor.Yes range0,
-                            DebugPointAtInOrTo.Yes range0,
-                            SeqExprOnly.SeqExprOnly false,
-                            true,
-                            SynPat.CreateNamed (Ident.Create "mem"),
-                            SynExpr.CreateIdent (Ident.Create "field"),
-                            SynExpr.CreateApp (
-                                SynExpr.CreateLongIdent (SynLongIdent.Create [ "arr" ; "Add" ]),
-                                SynExpr.CreateParen (
-                                    SynExpr.CreateApp (serializeNode ty, SynExpr.CreateIdentString "mem")
-                                )
-                            ),
-                            range0
-                        )
-                        SynExpr.CreateIdentString "arr"
-                    ],
-                range0,
-                {
-                    InKeyword = None
-                }
-            )
+                    SynExpr.createLongIdent [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonArray" ]
+                    |> SynExpr.applyTo (SynExpr.CreateConst ())
+                    |> SynBinding.basic (SynLongIdent.createS "arr") []
+                ]
            |> SynExpr.createLambda "field"
-        | IDictionaryType (keyType, valueType)
-        | DictionaryType (keyType, valueType)
-        | IReadOnlyDictionaryType (keyType, valueType)
-        | MapType (keyType, valueType) ->
+        | IDictionaryType (_keyType, valueType)
+        | DictionaryType (_keyType, valueType)
+        | IReadOnlyDictionaryType (_keyType, valueType)
+        | MapType (_keyType, valueType) ->
            // fun field ->
            //    let ret = JsonObject ()
            //    for (KeyValue(key, value)) in field do
            //        ret.Add (key.ToString (), {serializeNode} value)
            //    ret
-            SynExpr.LetOrUse (
-                false,
-                false,
-                [
-                    SynBinding.Let (
-                        pattern = SynPat.CreateNamed (Ident.Create "ret"),
-                        expr =
-                            SynExpr.CreateApp (
-                                SynExpr.CreateLongIdent (
-                                    SynLongIdent.Create [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonObject" ]
-                                ),
-                                SynExpr.CreateConst SynConst.Unit
-                            )
-                    )
-                ],
-                SynExpr.CreateSequential
-                    [
-                        SynExpr.ForEach (
-                            DebugPointAtFor.Yes range0,
-                            DebugPointAtInOrTo.Yes range0,
-                            SeqExprOnly.SeqExprOnly false,
-                            true,
-                            SynPat.CreateParen (
-                                SynPat.CreateLongIdent (
-                                    SynLongIdent.CreateString "KeyValue",
-                                    [
-                                        SynPat.CreateParen (
-                                            SynPat.Tuple (
-                                                false,
-                                                [
-                                                    SynPat.CreateNamed (Ident.Create "key")
-                                                    SynPat.CreateNamed (Ident.Create "value")
-                                                ],
-                                                [ range0 ],
-                                                range0
-                                            )
-                                        )
-                                    ]
+            [
+                SynExpr.ForEach (
+                    DebugPointAtFor.Yes range0,
+                    DebugPointAtInOrTo.Yes range0,
+                    SeqExprOnly.SeqExprOnly false,
+                    true,
+                    SynPat.CreateParen (
+                        SynPat.CreateLongIdent (
+                            SynLongIdent.createS "KeyValue",
+                            [
+                                SynPat.CreateParen (
+                                    SynPat.Tuple (
+                                        false,
+                                        [
+                                            SynPat.CreateNamed (Ident.Create "key")
+                                            SynPat.CreateNamed (Ident.Create "value")
+                                        ],
+                                        [ range0 ],
+                                        range0
+                                    )
                                )
-                            ),
-                            SynExpr.CreateIdent (Ident.Create "field"),
-                            SynExpr.CreateApp (
-                                SynExpr.CreateLongIdent (SynLongIdent.Create [ "ret" ; "Add" ]),
-                                SynExpr.CreateParenedTuple
-                                    [
-                                        SynExpr.CreateApp (
-                                            SynExpr.CreateLongIdent (SynLongIdent.Create [ "key" ; "ToString" ]),
-                                            SynExpr.CreateConst SynConst.Unit
-                                        )
-                                        SynExpr.CreateApp (serializeNode valueType, SynExpr.CreateIdentString "value")
-                                    ]
-                            ),
-                            range0
+                            ]
                        )
-                        SynExpr.CreateIdentString "ret"
-                    ],
-                range0,
-                {
-                    InKeyword = None
-                }
-            )
+                    ),
+                    SynExpr.CreateIdent (Ident.Create "field"),
+                    SynExpr.CreateApp (
+                        SynExpr.createLongIdent [ "ret" ; "Add" ],
+                        SynExpr.CreateParenedTuple
+                            [
+                                SynExpr.CreateApp (
+                                    SynExpr.createLongIdent [ "key" ; "ToString" ],
+                                    SynExpr.CreateConst ()
+                                )
+                                SynExpr.CreateApp (serializeNode valueType, SynExpr.createIdent "value")
+                            ]
+                    ),
+                    range0
+                )
+                SynExpr.createIdent "ret"
+            ]
+            |> SynExpr.CreateSequential
+            |> SynExpr.createLet
+                [
+                    SynExpr.createLongIdent [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonObject" ]
+                    |> SynExpr.applyTo (SynExpr.CreateConst ())
+                    |> SynBinding.basic (SynLongIdent.createS "ret") []
+                ]
            |> SynExpr.createLambda "field"
        | _ ->
            // {type}.toJsonNode
@@ -200,213 +157,192 @@ module internal JsonSerializeGenerator =
                | SynType.LongIdent ident -> ident.LongIdent
                | _ -> failwith $"Unrecognised type: %+A{fieldType}"

-            SynExpr.CreateLongIdent (SynLongIdent.CreateFromLongIdent (typeName @ [ Ident.Create "toJsonNode" ]))
+            SynExpr.createLongIdent' (typeName @ [ Ident.Create "toJsonNode" ])

    /// propertyName is probably a string literal, but it could be a [<Literal>] variable
    /// `node.Add ({propertyName}, {toJsonNode})`
-    let createSerializeRhs (propertyName : SynExpr) (fieldId : Ident) (fieldType : SynType) : SynExpr =
-        let func = SynExpr.CreateLongIdent (SynLongIdent.Create [ "node" ; "Add" ])
+    let createSerializeRhsRecord (propertyName : SynExpr) (fieldId : Ident) (fieldType : SynType) : SynExpr =
+        [
+            propertyName
+            SynExpr.applyFunction
+                (serializeNode fieldType)
+                (SynExpr.createLongIdent' [ Ident.create "input" ; fieldId ])
+        ]
+        |> SynExpr.CreateParenedTuple
+        |> SynExpr.applyFunction (SynExpr.createLongIdent [ "node" ; "Add" ])

-        let args =
-            SynExpr.CreateParenedTuple
-                [
-                    propertyName
-                    SynExpr.CreateApp (
-                        serializeNode fieldType,
-                        SynExpr.CreateLongIdent (SynLongIdent.CreateFromLongIdent [ Ident.Create "input" ; fieldId ])
-                    )
-                ]
+    let getPropertyName (fieldId : Ident) (attrs : SynAttribute list) : SynExpr =
+        let propertyNameAttr =
+            attrs
+            |> List.tryFind (fun attr -> attr.TypeName.AsString.EndsWith ("JsonPropertyName", StringComparison.Ordinal))

-        SynExpr.CreateApp (func, args)
+        match propertyNameAttr with
+        | None ->
+            let sb = StringBuilder fieldId.idText.Length
+            sb.Append (Char.ToLowerInvariant fieldId.idText.[0]) |> ignore

-    let createMaker (spec : JsonSerializeOutputSpec) (typeName : LongIdent) (fields : SynField list) =
-        let xmlDoc = PreXmlDoc.Create " Serialize to a JSON node"
+            if fieldId.idText.Length > 1 then
+                sb.Append fieldId.idText.[1..] |> ignore
+
+            sb.ToString () |> SynExpr.CreateConst
+        | Some name -> name.ArgExpr
+
+    /// `populateNode` will be inserted before we return the `node` variable.
+    ///
+    /// That is, we give you access to a `JsonObject` called `node`,
+    /// and you have access to a variable `inputArgName` which is of type `typeName`.
+    /// Your job is to provide a `populateNode` expression which has the side effect
+    /// of mutating `node` to faithfully reflect the value of `inputArgName`.
+    let scaffolding
+        (spec : JsonSerializeOutputSpec)
+        (typeName : LongIdent)
+        (inputArgName : Ident)
+        (populateNode : SynExpr)
+        : SynModuleDecl
+        =
+        let xmlDoc = PreXmlDoc.create "Serialize to a JSON node"

        let returnInfo =
-            SynBindingReturnInfo.Create (
-                SynType.LongIdent (SynLongIdent.Create [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonNode" ])
-            )
+            SynLongIdent.createS' [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonNode" ]
+            |> SynType.LongIdent

-        let inputArg = Ident.Create "input"
-        let functionName = Ident.Create "toJsonNode"
-
-        let inputVal =
-            let memberFlags =
-                if spec.ExtensionMethods then
-                    {
-                        SynMemberFlags.IsInstance = false
-                        SynMemberFlags.IsDispatchSlot = false
-                        SynMemberFlags.IsOverrideOrExplicitImpl = false
-                        SynMemberFlags.IsFinal = false
-                        SynMemberFlags.GetterOrSetterIsCompilerGenerated = false
-                        SynMemberFlags.MemberKind = SynMemberKind.Member
-                    }
-                    |> Some
-                else
-                    None
-
-            let thisIdOpt = if spec.ExtensionMethods then None else Some inputArg
-
-            SynValData.SynValData (
-                memberFlags,
-                SynValInfo.SynValInfo ([ [ SynArgInfo.CreateId functionName ] ], SynArgInfo.Empty),
-                thisIdOpt
-            )
+        let functionName = Ident.create "toJsonNode"

        let assignments =
-            fields
-            |> List.map (fun (SynField (attrs, _, id, fieldType, _, _, _, _, _)) ->
-                let id =
-                    match id with
-                    | None -> failwith "didn't get an ID on field"
-                    | Some id -> id
-
-                let attrs = attrs |> List.collect (fun l -> l.Attributes)
-
-                let propertyNameAttr =
-                    attrs
-                    |> List.tryFind (fun attr ->
-                        attr.TypeName.AsString.EndsWith ("JsonPropertyName", StringComparison.Ordinal)
-                    )
-
-                let propertyName =
-                    match propertyNameAttr with
-                    | None ->
-                        let sb = StringBuilder id.idText.Length
-                        sb.Append (Char.ToLowerInvariant id.idText.[0]) |> ignore
-
-                        if id.idText.Length > 1 then
-                            sb.Append id.idText.[1..] |> ignore
-
-                        sb.ToString () |> SynConst.CreateString |> SynExpr.CreateConst
-                    | Some name -> name.ArgExpr
-
-                let pattern =
-                    SynPat.LongIdent (
-                        SynLongIdent.CreateFromLongIdent [ id ],
-                        None,
-                        None,
-                        SynArgPats.Empty,
-                        None,
-                        range0
-                    )
-
-                createSerializeRhs propertyName id fieldType
-            )
-
-        let finalConstruction =
-            fields
-            |> List.map (fun (SynField (_, _, id, _, _, _, _, _, _)) ->
-                let id =
-                    match id with
-                    | None -> failwith "Expected record field to have an identifying name"
-                    | Some id -> id
-
-                (SynLongIdent.CreateFromLongIdent [ id ], true),
-                Some (SynExpr.CreateLongIdent (SynLongIdent.CreateFromLongIdent [ id ]))
-            )
-            |> AstHelper.instantiateRecord
-
-        let assignments = assignments |> SynExpr.CreateSequential
-
-        let assignments =
-            SynExpr.LetOrUse (
-                false,
-                false,
+            [
+                populateNode
+                SynExpr.Upcast (SynExpr.createIdent "node", SynType.Anon range0, range0)
+            ]
+            |> SynExpr.CreateSequential
+            |> SynExpr.createLet
                [
-                    SynBinding.Let (
-                        pattern = SynPat.CreateNamed (Ident.Create "node"),
-                        expr =
-                            SynExpr.CreateApp (
-                                SynExpr.CreateLongIdent (
-                                    SynLongIdent.Create [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonObject" ]
-                                ),
-                                SynExpr.CreateConst SynConst.Unit
-                            )
-                    )
-                ],
-                SynExpr.CreateSequential
-                    [
-                        SynExpr.Do (assignments, range0)
-                        SynExpr.Upcast (SynExpr.CreateIdentString "node", SynType.Anon range0, range0)
-                    ],
-                range0,
-                {
-                    InKeyword = None
-                }
-            )
+                    SynExpr.createLongIdent [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonObject" ]
+                    |> SynExpr.applyTo (SynExpr.CreateConst ())
+                    |> SynBinding.basic (SynLongIdent.createS "node") []
+                ]

        let pattern =
-            SynPat.LongIdent (
-                SynLongIdent.CreateFromLongIdent [ functionName ],
-                None,
-                None,
-                SynArgPats.Pats
-                    [
-                        SynPat.CreateTyped (
-                            SynPat.CreateNamed inputArg,
-                            SynType.LongIdent (SynLongIdent.CreateFromLongIdent typeName)
-                        )
-                        |> SynPat.CreateParen
-                    ],
-                None,
-                range0
-            )
+            SynPat.CreateNamed inputArgName
+            |> SynPat.annotateType (SynType.LongIdent (SynLongIdent.create typeName))

        if spec.ExtensionMethods then
-            let binding =
-                SynBinding.SynBinding (
-                    None,
-                    SynBindingKind.Normal,
-                    false,
-                    false,
-                    [],
-                    xmlDoc,
-                    inputVal,
-                    pattern,
-                    Some returnInfo,
-                    assignments,
-                    range0,
-                    DebugPointAtBinding.NoneAtInvisible,
-                    {
-                        LeadingKeyword = SynLeadingKeyword.StaticMember (range0, range0)
-                        InlineKeyword = None
-                        EqualsRange = Some range0
-                    }
-                )
+            let componentInfo =
+                SynComponentInfo.createLong typeName
+                |> SynComponentInfo.withDocString (PreXmlDoc.Create " Extension methods for JSON parsing")

-            let mem = SynMemberDefn.Member (binding, range0)
+            let memberDef =
+                assignments
+                |> SynBinding.basic (SynLongIdent.createI functionName) [ pattern ]
+                |> SynBinding.withXmlDoc xmlDoc
+                |> SynBinding.withReturnAnnotation returnInfo
+                |> SynMemberDefn.staticMember

            let containingType =
-                SynTypeDefn.SynTypeDefn (
-                    SynComponentInfo.Create (typeName, xmldoc = PreXmlDoc.Create " Extension methods for JSON parsing"),
-                    SynTypeDefnRepr.ObjectModel (SynTypeDefnKind.Augmentation range0, [], range0),
-                    [ mem ],
-                    None,
-                    range0,
-                    {
-                        LeadingKeyword = SynTypeDefnLeadingKeyword.Type range0
-                        EqualsRange = None
-                        WithKeyword = None
-                    }
-                )
+                SynTypeDefnRepr.augmentation ()
+                |> SynTypeDefn.create componentInfo
+                |> SynTypeDefn.withMemberDefns [ memberDef ]

            SynModuleDecl.Types ([ containingType ], range0)
        else
            let binding =
-                SynBinding.Let (
-                    isInline = false,
-                    isMutable = false,
-                    xmldoc = xmlDoc,
-                    returnInfo = returnInfo,
-                    expr = assignments,
-                    valData = inputVal,
-                    pattern = pattern
-                )
+                assignments
+                |> SynBinding.basic (SynLongIdent.createI functionName) [ pattern ]
+                |> SynBinding.withReturnAnnotation returnInfo
+                |> SynBinding.withXmlDoc xmlDoc

            SynModuleDecl.CreateLet [ binding ]

-    let createRecordModule
+    let recordModule (spec : JsonSerializeOutputSpec) (typeName : LongIdent) (fields : SynField list) =
+        let inputArg = Ident.create "input"
+        let fields = fields |> List.map SynField.extractWithIdent
+
+        fields
+        |> List.map (fun fieldData ->
+            let propertyName = getPropertyName fieldData.Ident fieldData.Attrs
+            createSerializeRhsRecord propertyName fieldData.Ident fieldData.Type
+        )
+        |> SynExpr.CreateSequential
+        |> fun expr -> SynExpr.Do (expr, range0)
+        |> scaffolding spec typeName inputArg
+
+    let unionModule (spec : JsonSerializeOutputSpec) (typeName : LongIdent) (cases : SynUnionCase list) =
+        let inputArg = Ident.create "input"
+        let fields = cases |> List.map SynUnionCase.extract
+
+        fields
+        |> List.map (fun unionCase ->
+            let propertyName = getPropertyName unionCase.Ident unionCase.Attrs
+
+            let caseNames = unionCase.Fields |> List.mapi (fun i _ -> Ident.create $"arg%i{i}")
+
+            let argPats = SynArgPats.create caseNames
+
+            let pattern =
+                SynPat.LongIdent (
+                    SynLongIdent.create (typeName @ [ unionCase.Ident ]),
+                    None,
+                    None,
+                    argPats,
+                    None,
+                    range0
+                )
+
+            let typeLine =
+                [
+                    SynExpr.CreateConst "type"
+                    SynExpr.applyFunction
+                        (SynExpr.createLongIdent [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonValue" ; "Create" ])
+                        propertyName
+                ]
+                |> SynExpr.CreateParenedTuple
+                |> SynExpr.applyFunction (SynExpr.createLongIdent [ "node" ; "Add" ])
+
+            let dataNode =
+                SynBinding.Let (
+                    pattern = SynPat.named "dataNode",
+                    expr =
+                        SynExpr.applyFunction
+                            (SynExpr.createLongIdent [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonObject" ])
+                            (SynExpr.CreateConst ())
+                )
+
+            let dataBindings =
+                (unionCase.Fields, caseNames)
+                ||> List.zip
+                |> List.map (fun (fieldData, caseName) ->
+                    let propertyName = getPropertyName (Option.get fieldData.Ident) fieldData.Attrs
+
+                    let node =
+                        SynExpr.applyFunction (serializeNode fieldData.Type) (SynExpr.createIdent' caseName)
+
+                    [ propertyName ; node ]
+                    |> SynExpr.CreateParenedTuple
+                    |> SynExpr.applyFunction (SynExpr.createLongIdent [ "dataNode" ; "Add" ])
+                )
+
+            let assignToNode =
+                [ SynExpr.CreateConst "data" ; SynExpr.createIdent "dataNode" ]
+                |> SynExpr.CreateParenedTuple
+                |> SynExpr.applyFunction (SynExpr.createLongIdent [ "node" ; "Add" ])
+
+            let dataNode =
+                SynExpr.CreateSequential (dataBindings @ [ assignToNode ])
+                |> SynExpr.createLet [ dataNode ]
+
+            let action =
+                [
+                    yield typeLine
+                    if not dataBindings.IsEmpty then
+                        yield dataNode
+                ]
+                |> SynExpr.CreateSequential
+
+            SynMatchClause.create pattern action
+        )
+        |> SynExpr.createMatch (SynExpr.createIdent' inputArg)
+        |> scaffolding spec typeName inputArg
+
+    let createModule
        (namespaceId : LongIdent)
        (opens : SynOpenDeclTarget list)
        (spec : JsonSerializeOutputSpec)
@@ -415,60 +351,64 @@ module internal JsonSerializeGenerator =
        let (SynTypeDefn (synComponentInfo, synTypeDefnRepr, _members, _implicitCtor, _, _)) =
            typeDefn

-        let (SynComponentInfo (_attributes, _typeParams, _constraints, recordId, _, _preferPostfix, _access, _)) =
+        let (SynComponentInfo (_attributes, _typeParams, _constraints, ident, _, _preferPostfix, _access, _)) =
            synComponentInfo

-        match synTypeDefnRepr with
-        | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Record (_accessibility, recordFields, _recordRange), _) ->
+        let attributes =
+            if spec.ExtensionMethods then
+                [ SynAttribute.autoOpen ]
+            else
+                [
+                    SynAttribute.RequireQualifiedAccess ()
+                    SynAttribute.compilationRepresentation
+                ]

-            let decls = [ createMaker spec recordId recordFields ]
+        let xmlDoc =
+            let fullyQualified = ident |> Seq.map (fun i -> i.idText) |> String.concat "."

-            let attributes =
+            let description =
                if spec.ExtensionMethods then
-                    [ SynAttributeList.Create SynAttribute.autoOpen ]
+                    "extension members"
                else
-                    [
-                        SynAttributeList.Create (SynAttribute.RequireQualifiedAccess ())
-                        SynAttributeList.Create SynAttribute.compilationRepresentation
-                    ]
+                    "methods"

-            let xmlDoc =
-                let fullyQualified = recordId |> Seq.map (fun i -> i.idText) |> String.concat "."
+            $"Module containing JSON serializing %s{description} for the %s{fullyQualified} type"
+            |> PreXmlDoc.create

-                let description =
-                    if spec.ExtensionMethods then
-                        "extension members"
-                    else
-                        "methods"
+        let moduleName =
+            if spec.ExtensionMethods then
+                match ident with
+                | [] -> failwith "unexpectedly got an empty identifier for type name"
+                | ident ->
+                    let expanded =
+                        List.last ident
+                        |> fun i -> i.idText
+                        |> fun s -> s + "JsonSerializeExtension"
+                        |> Ident.create

-                $" Module containing JSON serializing %s{description} for the %s{fullyQualified} type"
-                |> PreXmlDoc.Create
+                    List.take (List.length ident - 1) ident @ [ expanded ]
+            else
+                ident

-            let moduleName =
-                if spec.ExtensionMethods then
-                    match recordId with
-                    | [] -> failwith "unexpectedly got an empty identifier for record name"
-                    | recordId ->
-                        let expanded =
-                            List.last recordId
-                            |> fun i -> i.idText
-                            |> fun s -> s + "JsonSerializeExtension"
-                            |> Ident.Create
+        let info =
+            SynComponentInfo.createLong moduleName
+            |> SynComponentInfo.addAttributes attributes
+            |> SynComponentInfo.withDocString xmlDoc

-                        List.take (List.length recordId - 1) recordId @ [ expanded ]
-                else
-                    recordId
+        let decls =
+            match synTypeDefnRepr with
+            | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Record (_accessibility, recordFields, _range), _) ->
+                [ recordModule spec ident recordFields ]
+            | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Union (_accessibility, unionFields, _range), _) ->
+                [ unionModule spec ident unionFields ]
+            | _ -> failwithf "Only record types currently supported."

-            let info =
-                SynComponentInfo.Create (moduleName, attributes = attributes, xmldoc = xmlDoc)
+        let mdl = SynModuleDecl.CreateNestedModule (info, decls)

-            let mdl = SynModuleDecl.CreateNestedModule (info, decls)
-
-            SynModuleOrNamespace.CreateNamespace (
-                namespaceId,
-                decls = (opens |> List.map SynModuleDecl.CreateOpen) @ [ mdl ]
-            )
-        | _ -> failwithf "Not a record type"
+        SynModuleOrNamespace.CreateNamespace (
+            namespaceId,
+            decls = (opens |> List.map SynModuleDecl.CreateOpen) @ [ mdl ]
+        )

 /// Myriad generator that provides a method (possibly an extension method) for a record type,
 /// containing a JSON serialization function.
@@ -482,10 +422,20 @@ type JsonSerializeGenerator () =
            let ast, _ =
                Ast.fromFilename context.InputFilename |> Async.RunSynchronously |> Array.head

-            let records = Ast.extractRecords ast
+            let recordsAndUnions =
+                Ast.extractTypeDefn ast
+                |> List.map (fun (name, defns) ->
+                    defns
+                    |> List.choose (fun defn ->
+                        if Ast.isRecord defn then Some defn
+                        elif Ast.isDu defn then Some defn
+                        else None
+                    )
+                    |> fun defns -> name, defns
+                )

-            let namespaceAndRecords =
-                records
+            let namespaceAndTypes =
+                recordsAndUnions
                |> List.choose (fun (ns, types) ->
                    types
                    |> List.choose (fun typeDef ->
@@ -515,13 +465,10 @@ type JsonSerializeGenerator () =
            let opens = AstHelper.extractOpens ast

            let modules =
-                namespaceAndRecords
-                |> List.collect (fun (ns, records) ->
-                    records
-                    |> List.map (fun (record, spec) ->
-                        let recordModule = JsonSerializeGenerator.createRecordModule ns opens spec record
-                        recordModule
-                    )
+                namespaceAndTypes
+                |> List.collect (fun (ns, types) ->
+                    types
+                    |> List.map (fun (ty, spec) -> JsonSerializeGenerator.createModule ns opens spec ty)
                )

            Output.Ast modules
--- a/WoofWare.Myriad.Plugins/Primitives.fs
+++ b/WoofWare.Myriad.Plugins/Primitives.fs
@@ -0,0 +1,30 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Syntax
+open Fantomas.FCS.Text.Range
+
+[<RequireQualifiedAccess>]
+module internal Primitives =
+    /// Given e.g. "byte", returns "System.Byte".
+    let qualifyType (typeName : string) : LongIdent option =
+        match typeName with
+        | "float32"
+        | "single" -> [ "System" ; "Single" ] |> Some
+        | "float"
+        | "double" -> [ "System" ; "Double" ] |> Some
+        | "byte"
+        | "uint8" -> [ "System" ; "Byte" ] |> Some
+        | "sbyte"
+        | "int8" -> [ "System" ; "SByte" ] |> Some
+        | "int16" -> [ "System" ; "Int16" ] |> Some
+        | "int"
+        | "int32" -> [ "System" ; "Int32" ] |> Some
+        | "int64" -> [ "System" ; "Int64" ] |> Some
+        | "uint16" -> [ "System" ; "UInt16" ] |> Some
+        | "uint"
+        | "uint32" -> [ "System" ; "UInt32" ] |> Some
+        | "uint64" -> [ "System" ; "UInt64" ] |> Some
+        | "char" -> [ "System" ; "Char" ] |> Some
+        | "decimal" -> [ "System" ; "Decimal" ] |> Some
+        | _ -> None
+        |> Option.map (List.map (fun i -> (Ident (i, range0))))
--- a/WoofWare.Myriad.Plugins/RemoveOptionsGenerator.fs
+++ b/WoofWare.Myriad.Plugins/RemoveOptionsGenerator.fs
@@ -47,7 +47,7 @@ module internal RemoveOptionsGenerator =
        (fields : SynField list)
        =
        let fields : SynField list = fields |> List.map removeOption
-        let name = Ident.Create "Short"
+        let name = Ident.create "Short"

        let record =
            {
@@ -63,38 +63,28 @@ module internal RemoveOptionsGenerator =

        SynModuleDecl.Types ([ typeDecl ], range0)

-    let createMaker (withOptionsType : LongIdent) (withoutOptionsType : LongIdent) (fields : SynField list) =
-        let xmlDoc = PreXmlDoc.Create " Remove the optional members of the input."
+    let createMaker (withOptionsType : LongIdent) (withoutOptionsType : LongIdent) (fields : SynFieldData<Ident> list) =
+        let xmlDoc = PreXmlDoc.create "Remove the optional members of the input."

-        let returnInfo =
-            SynBindingReturnInfo.Create (SynType.LongIdent (SynLongIdent.CreateFromLongIdent withOptionsType))
-
-        let inputArg = Ident.Create "input"
-        let functionName = Ident.Create "shorten"
-
-        let inputVal =
-            SynValData.SynValData (
-                None,
-                SynValInfo.SynValInfo ([ [ SynArgInfo.CreateId functionName ] ], SynArgInfo.Empty),
-                Some inputArg
-            )
+        let inputArg = Ident.create "input"
+        let functionName = Ident.create "shorten"

        let body =
            fields
-            |> List.map (fun (SynField (_, _, id, fieldType, _, _, _, _, _)) ->
-                let id =
-                    match id with
-                    | None -> failwith "Expected record field to have an identifying name"
-                    | Some id -> id
-
+            |> List.map (fun fieldData ->
                let accessor =
-                    SynExpr.LongIdent (false, SynLongIdent ([ inputArg ; id ], [ range0 ], []), None, range0)
+                    SynExpr.LongIdent (
+                        false,
+                        SynLongIdent ([ inputArg ; fieldData.Ident ], [ range0 ], []),
+                        None,
+                        range0
+                    )

                let body =
-                    match fieldType with
+                    match fieldData.Type with
                    | OptionType _ ->
-                        SynExpr.CreateApp (
-                            SynExpr.CreateAppInfix (
+                        SynExpr.applyFunction
+                            (SynExpr.CreateAppInfix (
                                SynExpr.LongIdent (
                                    false,
                                    SynLongIdent.SynLongIdent (
@@ -106,49 +96,29 @@ module internal RemoveOptionsGenerator =
                                    range0
                                ),
                                accessor
-                            ),
-                            SynExpr.CreateApp (
-                                SynExpr.CreateLongIdent (SynLongIdent.CreateString "Option.defaultWith"),
-                                SynExpr.CreateLongIdent (
-                                    SynLongIdent.CreateFromLongIdent (
-                                        withoutOptionsType @ [ Ident.Create (sprintf "Default%s" id.idText) ]
-                                    )
-                                )
-                            )
-                        )
+                            ))
+                            (SynExpr.applyFunction
+                                (SynExpr.createLongIdent [ "Option" ; "defaultWith" ])
+                                (SynExpr.createLongIdent' (
+                                    withoutOptionsType
+                                    @ [ Ident.create (sprintf "Default%s" fieldData.Ident.idText) ]
+                                )))
                    | _ -> accessor

-                (SynLongIdent.CreateFromLongIdent [ id ], true), Some body
+                (SynLongIdent.createI fieldData.Ident, true), Some body
            )
            |> AstHelper.instantiateRecord

-        let pattern =
-            SynPat.LongIdent (
-                SynLongIdent.CreateFromLongIdent [ functionName ],
-                None,
-                None,
-                SynArgPats.Pats
-                    [
-                        SynPat.CreateTyped (
-                            SynPat.CreateNamed inputArg,
-                            SynType.LongIdent (SynLongIdent.CreateFromLongIdent withoutOptionsType)
-                        )
-                        |> SynPat.CreateParen
-                    ],
-                None,
-                range0
-            )
-
        let binding =
-            SynBinding.Let (
-                isInline = false,
-                isMutable = false,
-                xmldoc = xmlDoc,
-                returnInfo = returnInfo,
-                expr = body,
-                valData = inputVal,
-                pattern = pattern
-            )
+            SynBinding.basic
+                (SynLongIdent.createI functionName)
+                [
+                    SynPat.named inputArg.idText
+                    |> SynPat.annotateType (SynType.LongIdent (SynLongIdent.create withoutOptionsType))
+                ]
+                body
+            |> SynBinding.withXmlDoc xmlDoc
+            |> SynBinding.withReturnAnnotation (SynType.LongIdent (SynLongIdent.create withOptionsType))

        SynModuleDecl.CreateLet [ binding ]

@@ -160,29 +130,27 @@ module internal RemoveOptionsGenerator =
            synComponentInfo

        match synTypeDefnRepr with
-        | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Record (accessibility, recordFields, _recordRange), _) ->
+        | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Record (accessibility, fields, _range), _) ->
+            let fieldData = fields |> List.map SynField.extractWithIdent

            let decls =
                [
-                    createType (Some doc) accessibility typeParams recordFields
-                    createMaker [ Ident.Create "Short" ] recordId recordFields
-                ]
-
-            let attributes =
-                [
-                    SynAttributeList.Create (SynAttribute.RequireQualifiedAccess ())
-                    SynAttributeList.Create SynAttribute.compilationRepresentation
+                    createType (Some doc) accessibility typeParams fields
+                    createMaker [ Ident.create "Short" ] recordId fieldData
                ]

            let xmlDoc =
                recordId
                |> Seq.map (fun i -> i.idText)
                |> String.concat "."
-                |> sprintf " Module containing an option-truncated version of the %s type"
-                |> PreXmlDoc.Create
+                |> sprintf "Module containing an option-truncated version of the %s type"
+                |> PreXmlDoc.create

            let info =
-                SynComponentInfo.Create (recordId, attributes = attributes, xmldoc = xmlDoc)
+                SynComponentInfo.createLong recordId
+                |> SynComponentInfo.withDocString xmlDoc
+                |> SynComponentInfo.addAttributes [ SynAttribute.compilationRepresentation ]
+                |> SynComponentInfo.addAttributes [ SynAttribute.RequireQualifiedAccess () ]

            let mdl = SynModuleDecl.CreateNestedModule (info, decls)

--- a/WoofWare.Myriad.Plugins/SynExpr/CompExpr.fs
+++ b/WoofWare.Myriad.Plugins/SynExpr/CompExpr.fs
@@ -0,0 +1,49 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Syntax
+
+type internal CompExprBinding =
+    | LetBang of varName : string * rhs : SynExpr
+    | Let of varName : string * rhs : SynExpr
+    | Use of varName : string * rhs : SynExpr
+    | Do of body : SynExpr
+
+(*
+Potential API!
+type internal CompExprBindings =
+    private
+        {
+            /// These are stored in reverse.
+            Bindings : CompExprBinding list
+            CompExprName : string
+        }
+
+[<RequireQualifiedAccess>]
+module internal CompExprBindings =
+    let make (name : string) : CompExprBindings =
+        {
+            Bindings = []
+            CompExprName = name
+        }
+
+    let thenDo (body : SynExpr) (bindings : CompExprBindings) =
+        { bindings with
+            Bindings = (Do body :: bindings.Bindings)
+        }
+
+    let thenLet (varName : string) (value : SynExpr) (bindings : CompExprBindings) =
+        { bindings with
+            Bindings = (Let (varName, value) :: bindings.Bindings)
+        }
+
+    let thenLetBang (varName : string) (value : SynExpr) (bindings : CompExprBindings) =
+        { bindings with
+            Bindings = (LetBang (varName, value) :: bindings.Bindings)
+        }
+
+
+    let thenUse (varName : string) (value : SynExpr) (bindings : CompExprBindings) =
+        { bindings with
+            Bindings = (LetBang (varName, value) :: bindings.Bindings)
+        }
+*)
--- a/WoofWare.Myriad.Plugins/SynExpr/Ident.fs
+++ b/WoofWare.Myriad.Plugins/SynExpr/Ident.fs
@@ -3,12 +3,14 @@ namespace WoofWare.Myriad.Plugins
 open System
 open System.Text
 open Fantomas.FCS.Syntax
-open Myriad.Core
+open Fantomas.FCS.Text.Range

 [<RequireQualifiedAccess>]
 module internal Ident =
+    let inline create (s : string) = Ident (s, range0)
+
    let lowerFirstLetter (x : Ident) : Ident =
        let result = StringBuilder x.idText.Length
        result.Append (Char.ToLowerInvariant x.idText.[0]) |> ignore
        result.Append x.idText.[1..] |> ignore
-        Ident.Create ((result : StringBuilder).ToString ())
+        create ((result : StringBuilder).ToString ())
--- a/WoofWare.Myriad.Plugins/SynExpr/PreXmlDoc.fs
+++ b/WoofWare.Myriad.Plugins/SynExpr/PreXmlDoc.fs
@@ -0,0 +1,9 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Xml
+open Fantomas.FCS.Text.Range
+
+[<RequireQualifiedAccess>]
+module internal PreXmlDoc =
+    let create (s : string) : PreXmlDoc =
+        PreXmlDoc.Create ([| " " + s |], range0)
--- a/WoofWare.Myriad.Plugins/SynExpr/SynArgPats.fs
+++ b/WoofWare.Myriad.Plugins/SynExpr/SynArgPats.fs
@@ -0,0 +1,18 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Syntax
+open Fantomas.FCS.Text.Range
+
+[<RequireQualifiedAccess>]
+module internal SynArgPats =
+    let create (caseNames : Ident list) : SynArgPats =
+        if caseNames.IsEmpty then
+            SynArgPats.Pats []
+        else
+
+        caseNames
+        |> List.map (fun ident -> SynPat.Named (SynIdent.SynIdent (ident, None), false, None, range0))
+        |> fun ps -> SynPat.Tuple (false, ps, List.replicate (ps.Length - 1) range0, range0)
+        |> fun p -> SynPat.Paren (p, range0)
+        |> List.singleton
+        |> SynArgPats.Pats
--- a/WoofWare.Myriad.Plugins/SynExpr/SynAttribute.fs
+++ b/WoofWare.Myriad.Plugins/SynExpr/SynAttribute.fs
@@ -8,11 +8,11 @@ open Myriad.Core
 module internal SynAttribute =
    let internal compilationRepresentation : SynAttribute =
        {
-            TypeName = SynLongIdent.CreateString "CompilationRepresentation"
+            TypeName = SynLongIdent.createS "CompilationRepresentation"
            ArgExpr =
                SynExpr.CreateLongIdent (
                    false,
-                    SynLongIdent.Create [ "CompilationRepresentationFlags" ; "ModuleSuffix" ],
+                    SynLongIdent.createS' [ "CompilationRepresentationFlags" ; "ModuleSuffix" ],
                    None
                )
                |> SynExpr.CreateParen
@@ -23,7 +23,7 @@ module internal SynAttribute =

    let internal autoOpen : SynAttribute =
        {
-            TypeName = SynLongIdent.CreateString "AutoOpen"
+            TypeName = SynLongIdent.createS "AutoOpen"
            ArgExpr = SynExpr.CreateConst SynConst.Unit
            Target = None
            AppliesToGetterAndSetter = false
--- a/WoofWare.Myriad.Plugins/SynExpr/SynBinding.fs
+++ b/WoofWare.Myriad.Plugins/SynExpr/SynBinding.fs
@@ -0,0 +1,173 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Syntax
+open Fantomas.FCS.SyntaxTrivia
+open Fantomas.FCS.Xml
+open Fantomas.FCS.Text.Range
+
+[<RequireQualifiedAccess>]
+module internal SynBinding =
+
+    let rec private stripParen (pat : SynPat) =
+        match pat with
+        | SynPat.Paren (p, _) -> stripParen p
+        | _ -> pat
+
+    let rec private getName (pat : SynPat) : Ident option =
+        match stripParen pat with
+        | SynPat.Named (SynIdent.SynIdent (name, _), _, _, _) -> Some name
+        | SynPat.Wild _ -> None
+        | SynPat.Typed (pat, _, _) -> getName pat
+        | SynPat.Const _ -> None
+        | SynPat.LongIdent (SynLongIdent.SynLongIdent (longIdent, _, _), _, _, _, _, _) ->
+            match longIdent with
+            | [ x ] -> Some x
+            | _ -> failwithf "got long ident %O ; can only get the name of a long ident with one component" longIdent
+        | _ -> failwithf "unrecognised pattern: %+A" pat
+
+    let triviaZero (isMember : bool) =
+        {
+            SynBindingTrivia.EqualsRange = Some range0
+            InlineKeyword = None
+            LeadingKeyword =
+                if isMember then
+                    SynLeadingKeyword.Member range0
+                else
+                    SynLeadingKeyword.Let range0
+        }
+
+    let basic (name : SynLongIdent) (args : SynPat list) (body : SynExpr) : SynBinding =
+        let valInfo : SynValInfo =
+            args
+            |> List.map (fun pat -> [ SynArgInfo.SynArgInfo (SynAttributes.Empty, false, getName pat) ])
+            |> fun x -> SynValInfo.SynValInfo (x, SynArgInfo.SynArgInfo ([], false, None))
+
+        SynBinding.SynBinding (
+            None,
+            SynBindingKind.Normal,
+            false,
+            false,
+            [],
+            PreXmlDoc.Empty,
+            SynValData.SynValData (None, valInfo, None),
+            SynPat.LongIdent (name, None, None, SynArgPats.Pats args, None, range0),
+            None,
+            body,
+            range0,
+            DebugPointAtBinding.Yes range0,
+            triviaZero false
+        )
+
+    let withAccessibility (acc : SynAccess option) (binding : SynBinding) : SynBinding =
+        match binding with
+        | SynBinding (_, kind, inl, mut, attrs, xml, valData, headPat, returnInfo, expr, range, debugPoint, trivia) ->
+            let headPat =
+                match headPat with
+                | SynPat.LongIdent (ident, extra, options, argPats, _, range) ->
+                    SynPat.LongIdent (ident, extra, options, argPats, acc, range)
+                | _ -> failwithf "unrecognised head pattern: %O" headPat
+
+            SynBinding (acc, kind, inl, mut, attrs, xml, valData, headPat, returnInfo, expr, range, debugPoint, trivia)
+
+    let withXmlDoc (doc : PreXmlDoc) (binding : SynBinding) : SynBinding =
+        match binding with
+        | SynBinding (acc, kind, inl, mut, attrs, _, valData, headPat, returnInfo, expr, range, debugPoint, trivia) ->
+            SynBinding (acc, kind, inl, mut, attrs, doc, valData, headPat, returnInfo, expr, range, debugPoint, trivia)
+
+    let withReturnAnnotation (ty : SynType) (binding : SynBinding) : SynBinding =
+        match binding with
+        | SynBinding (acc, kind, inl, mut, attrs, doc, valData, headPat, _, expr, range, debugPoint, trivia) ->
+            let retInfo =
+                SynBindingReturnInfo.SynBindingReturnInfo (
+                    ty,
+                    range0,
+                    [],
+                    {
+                        ColonRange = Some range0
+                    }
+                )
+
+            SynBinding (
+                acc,
+                kind,
+                inl,
+                mut,
+                attrs,
+                doc,
+                valData,
+                headPat,
+                Some retInfo,
+                expr,
+                range,
+                debugPoint,
+                trivia
+            )
+
+    let makeInline (binding : SynBinding) : SynBinding =
+        match binding with
+        | SynBinding (acc, kind, _, mut, attrs, doc, valData, headPat, ret, expr, range, debugPoint, trivia) ->
+            SynBinding (
+                acc,
+                kind,
+                true,
+                mut,
+                attrs,
+                doc,
+                valData,
+                headPat,
+                ret,
+                expr,
+                range,
+                debugPoint,
+                { trivia with
+                    InlineKeyword = Some range0
+                }
+            )
+
+    let makeStaticMember (binding : SynBinding) : SynBinding =
+        let memberFlags =
+            {
+                SynMemberFlags.IsInstance = false
+                SynMemberFlags.IsDispatchSlot = false
+                SynMemberFlags.IsOverrideOrExplicitImpl = false
+                SynMemberFlags.IsFinal = false
+                SynMemberFlags.GetterOrSetterIsCompilerGenerated = false
+                SynMemberFlags.MemberKind = SynMemberKind.Member
+            }
+
+        match binding with
+        | SynBinding (acc, kind, inl, mut, attrs, doc, valData, headPat, ret, expr, range, debugPoint, trivia) ->
+            let valData =
+                match valData with
+                | SynValData.SynValData (_, valInfo, _) -> SynValData.SynValData (Some memberFlags, valInfo, None)
+
+            let trivia =
+                { trivia with
+                    LeadingKeyword = SynLeadingKeyword.StaticMember (range0, range0)
+                }
+
+            SynBinding (acc, kind, inl, mut, attrs, doc, valData, headPat, ret, expr, range, debugPoint, trivia)
+
+    let makeInstanceMember (binding : SynBinding) : SynBinding =
+        let memberFlags =
+            {
+                SynMemberFlags.IsInstance = true
+                SynMemberFlags.IsDispatchSlot = false
+                SynMemberFlags.IsOverrideOrExplicitImpl = true
+                SynMemberFlags.IsFinal = false
+                SynMemberFlags.GetterOrSetterIsCompilerGenerated = false
+                SynMemberFlags.MemberKind = SynMemberKind.Member
+            }
+
+        match binding with
+        | SynBinding (acc, kind, inl, mut, attrs, doc, valData, headPat, ret, expr, range, debugPoint, trivia) ->
+            let valData =
+                match valData with
+                | SynValData.SynValData (_, valInfo, _) -> SynValData.SynValData (Some memberFlags, valInfo, None)
+
+            let trivia =
+                { trivia with
+                    LeadingKeyword = SynLeadingKeyword.Member range0
+                }
+
+            SynBinding (acc, kind, inl, mut, attrs, doc, valData, headPat, ret, expr, range, debugPoint, trivia)
--- a/WoofWare.Myriad.Plugins/SynExpr/SynComponentInfo.fs
+++ b/WoofWare.Myriad.Plugins/SynExpr/SynComponentInfo.fs
@@ -0,0 +1,50 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Syntax
+open Fantomas.FCS.Xml
+open Fantomas.FCS.Text.Range
+
+[<RequireQualifiedAccess>]
+module internal SynComponentInfo =
+    let inline createLong (name : LongIdent) =
+        SynComponentInfo.SynComponentInfo ([], None, [], name, PreXmlDoc.Empty, false, None, range0)
+
+    let inline create (name : Ident) = createLong [ name ]
+
+    let inline withDocString (doc : PreXmlDoc) (i : SynComponentInfo) : SynComponentInfo =
+        match i with
+        | SynComponentInfo.SynComponentInfo (attrs, typars, constraints, name, _, postfix, access, range) ->
+            SynComponentInfo (attrs, typars, constraints, name, doc, postfix, access, range)
+
+    let inline setGenerics (typars : SynTyparDecls option) (i : SynComponentInfo) : SynComponentInfo =
+        match i with
+        | SynComponentInfo.SynComponentInfo (attrs, _, constraints, name, doc, postfix, access, range) ->
+            SynComponentInfo (attrs, typars, constraints, name, doc, postfix, access, range)
+
+    let inline withGenerics (typars : SynTyparDecl list) (i : SynComponentInfo) : SynComponentInfo =
+        let inner =
+            if typars.IsEmpty then
+                None
+            else
+                Some (SynTyparDecls.PostfixList (typars, [], range0))
+
+        setGenerics inner i
+
+    let inline setAccessibility (acc : SynAccess option) (i : SynComponentInfo) : SynComponentInfo =
+        match i with
+        | SynComponentInfo.SynComponentInfo (attrs, typars, constraints, name, doc, postfix, _, range) ->
+            SynComponentInfo.SynComponentInfo (attrs, typars, constraints, name, doc, postfix, acc, range)
+
+    let inline withAccessibility (acc : SynAccess) (i : SynComponentInfo) : SynComponentInfo =
+        setAccessibility (Some acc) i
+
+    let inline addAttributes (attrs : SynAttribute list) (i : SynComponentInfo) : SynComponentInfo =
+        match i with
+        | SynComponentInfo.SynComponentInfo (oldAttrs, typars, constraints, name, doc, postfix, acc, range) ->
+            let attrs =
+                {
+                    SynAttributeList.Attributes = attrs
+                    SynAttributeList.Range = range0
+                }
+
+            SynComponentInfo.SynComponentInfo ((attrs :: oldAttrs), typars, constraints, name, doc, postfix, acc, range)
--- a/WoofWare.Myriad.Plugins/SynExpr/SynExpr.fs
+++ b/WoofWare.Myriad.Plugins/SynExpr/SynExpr.fs
@@ -3,33 +3,41 @@ namespace WoofWare.Myriad.Plugins
 open Fantomas.FCS.Syntax
 open Fantomas.FCS.SyntaxTrivia
 open Myriad.Core
-open Myriad.Core.Ast
 open Fantomas.FCS.Text.Range

-type internal CompExprBinding =
-    | LetBang of varName : string * rhs : SynExpr
-    | Let of varName : string * rhs : SynExpr
-    | Use of varName : string * rhs : SynExpr
-    | Do of body : SynExpr
+[<AutoOpen>]
+module internal SynExprExtensions =
+    type SynExpr with
+        static member CreateConst (s : string) : SynExpr =
+            SynExpr.Const (SynConst.String (s, SynStringKind.Regular, range0), range0)
+
+        static member CreateConst () : SynExpr = SynExpr.Const (SynConst.Unit, range0)
+
+        static member CreateConst (i : int32) : SynExpr =
+            SynExpr.Const (SynConst.Int32 i, range0)

 [<RequireQualifiedAccess>]
 module internal SynExpr =

+    /// {f} {x}
+    let applyFunction (f : SynExpr) (x : SynExpr) : SynExpr = SynExpr.CreateApp (f, x)
+
+    /// {f} {x}
+    let applyTo (x : SynExpr) (f : SynExpr) : SynExpr = SynExpr.CreateApp (f, x)
+
    /// {expr} |> {func}
    let pipeThroughFunction (func : SynExpr) (expr : SynExpr) : SynExpr =
-        SynExpr.CreateApp (
-            SynExpr.CreateAppInfix (
-                SynExpr.CreateLongIdent (
-                    SynLongIdent.SynLongIdent (
-                        [ Ident.Create "op_PipeRight" ],
-                        [],
-                        [ Some (IdentTrivia.OriginalNotation "|>") ]
-                    )
-                ),
-                expr
+        SynExpr.CreateAppInfix (
+            SynExpr.CreateLongIdent (
+                SynLongIdent.SynLongIdent (
+                    [ Ident.Create "op_PipeRight" ],
+                    [],
+                    [ Some (IdentTrivia.OriginalNotation "|>") ]
+                )
            ),
-            func
+            expr
        )
+        |> applyTo func

    /// if {cond} then {trueBranch} else {falseBranch}
    /// Note that this function puts the trueBranch last, for pipelining convenience:
@@ -54,7 +62,7 @@ module internal SynExpr =
    /// try {body} with | {exc} as exc -> {handler}
    let pipeThroughTryWith (exc : SynPat) (handler : SynExpr) (body : SynExpr) : SynExpr =
        let clause =
-            SynMatchClause.Create (SynPat.As (exc, SynPat.CreateNamed (Ident.Create "exc"), range0), None, handler)
+            SynMatchClause.create (SynPat.As (exc, SynPat.named "exc", range0)) handler

        SynExpr.TryWith (
            body,
@@ -72,96 +80,82 @@ module internal SynExpr =

    /// {a} = {b}
    let equals (a : SynExpr) (b : SynExpr) =
-        SynExpr.CreateApp (
-            SynExpr.CreateAppInfix (
-                SynExpr.CreateLongIdent (
-                    SynLongIdent.SynLongIdent (
-                        Ident.CreateLong "op_Equality",
-                        [],
-                        [ Some (IdentTrivia.OriginalNotation "=") ]
-                    )
-                ),
-                a
+        SynExpr.CreateAppInfix (
+            SynExpr.CreateLongIdent (
+                SynLongIdent.SynLongIdent (
+                    Ident.CreateLong "op_Equality",
+                    [],
+                    [ Some (IdentTrivia.OriginalNotation "=") ]
+                )
            ),
-            b
+            a
        )
+        |> applyTo b

    /// {a} + {b}
    let plus (a : SynExpr) (b : SynExpr) =
-        SynExpr.CreateApp (
-            SynExpr.CreateAppInfix (
-                SynExpr.CreateLongIdent (
-                    SynLongIdent.SynLongIdent (
-                        Ident.CreateLong "op_Addition",
-                        [],
-                        [ Some (IdentTrivia.OriginalNotation "+") ]
-                    )
-                ),
-                a
+        SynExpr.CreateAppInfix (
+            SynExpr.CreateLongIdent (
+                SynLongIdent.SynLongIdent (
+                    Ident.CreateLong "op_Addition",
+                    [],
+                    [ Some (IdentTrivia.OriginalNotation "+") ]
+                )
            ),
-            b
+            a
        )
+        |> applyTo b

    let rec stripOptionalParen (expr : SynExpr) : SynExpr =
        match expr with
        | SynExpr.Paren (expr, _, _, _) -> stripOptionalParen expr
        | expr -> expr

-    /// Given e.g. "byte", returns "System.Byte".
-    let qualifyPrimitiveType (typeName : string) : LongIdent =
-        match typeName with
-        | "float32" -> [ "System" ; "Single" ]
-        | "float" -> [ "System" ; "Double" ]
-        | "byte"
-        | "uint8" -> [ "System" ; "Byte" ]
-        | "sbyte" -> [ "System" ; "SByte" ]
-        | "int16" -> [ "System" ; "Int16" ]
-        | "int" -> [ "System" ; "Int32" ]
-        | "int64" -> [ "System" ; "Int64" ]
-        | "uint16" -> [ "System" ; "UInt16" ]
-        | "uint"
-        | "uint32" -> [ "System" ; "UInt32" ]
-        | "uint64" -> [ "System" ; "UInt64" ]
-        | _ -> failwith $"Unable to identify a parsing function `string -> %s{typeName}`"
-        |> List.map Ident.Create
-
    /// {obj}.{meth} {arg}
    let callMethodArg (meth : string) (arg : SynExpr) (obj : SynExpr) : SynExpr =
-        SynExpr.CreateApp (
-            SynExpr.DotGet (
-                obj,
-                range0,
-                SynLongIdent.SynLongIdent (id = [ Ident.Create meth ], dotRanges = [], trivia = [ None ]),
-                range0
-            ),
-            arg
+        SynExpr.DotGet (
+            obj,
+            range0,
+            SynLongIdent.SynLongIdent (id = [ Ident.Create meth ], dotRanges = [], trivia = [ None ]),
+            range0
        )
+        |> applyTo arg

    /// {obj}.{meth}()
    let callMethod (meth : string) (obj : SynExpr) : SynExpr =
-        callMethodArg meth (SynExpr.CreateConst SynConst.Unit) obj
+        callMethodArg meth (SynExpr.CreateConst ()) obj
+
+    let callGenericMethod (meth : string) (ty : LongIdent) (obj : SynExpr) : SynExpr =
+        SynExpr.TypeApp (
+            SynExpr.DotGet (obj, range0, SynLongIdent.createS meth, range0),
+            range0,
+            [ SynType.LongIdent (SynLongIdent.create ty) ],
+            [],
+            Some range0,
+            range0,
+            range0
+        )
+        |> applyTo (SynExpr.CreateConst ())

    /// {obj}.{meth}<ty>()
-    let callGenericMethod (meth : string) (ty : string) (obj : SynExpr) : SynExpr =
-        SynExpr.CreateApp (
-            SynExpr.TypeApp (
-                SynExpr.DotGet (obj, range0, SynLongIdent.Create [ meth ], range0),
-                range0,
-                [ SynType.CreateLongIdent ty ],
-                [],
-                Some range0,
-                range0,
-                range0
-            ),
-            SynExpr.CreateConst SynConst.Unit
+    let callGenericMethod' (meth : string) (ty : string) (obj : SynExpr) : SynExpr =
+        SynExpr.TypeApp (
+            SynExpr.DotGet (obj, range0, SynLongIdent.createS meth, range0),
+            range0,
+            [ SynType.CreateLongIdent ty ],
+            [],
+            Some range0,
+            range0,
+            range0
        )
+        |> applyTo (SynExpr.CreateConst ())

    let index (property : SynExpr) (obj : SynExpr) : SynExpr =
        SynExpr.DotIndexedGet (obj, property, range0, range0)

    /// (fun {varName} -> {body})
    let createLambda (varName : string) (body : SynExpr) : SynExpr =
-        let parsedDataPat = [ SynPat.CreateNamed (Ident.Create varName) ]
+        let parsedDataPat = [ SynPat.named varName ]

        SynExpr.Lambda (
            false,
@@ -176,26 +170,66 @@ module internal SynExpr =
        )
        |> SynExpr.CreateParen

-    let reraise : SynExpr =
-        SynExpr.CreateApp (SynExpr.CreateIdent (Ident.Create "reraise"), SynExpr.CreateConst SynConst.Unit)
+    let createThunk (body : SynExpr) : SynExpr =
+        let parsedDataPat = [ SynPat.Const (SynConst.Unit, range0) ]
+
+        SynExpr.Lambda (
+            false,
+            false,
+            SynSimplePats.Create [],
+            body,
+            Some (parsedDataPat, body),
+            range0,
+            {
+                ArrowRange = Some range0
+            }
+        )
+        |> SynExpr.CreateParen

    /// {body} |> fun a -> Async.StartAsTask (a, ?cancellationToken=ct)
    let startAsTask (ct : SynLongIdent) (body : SynExpr) =
        let lambda =
-            SynExpr.CreateApp (
-                SynExpr.CreateLongIdent (SynLongIdent.Create [ "Async" ; "StartAsTask" ]),
-                SynExpr.CreateParenedTuple
-                    [
-                        SynExpr.CreateLongIdent (SynLongIdent.CreateString "a")
-                        equals
-                            (SynExpr.LongIdent (true, SynLongIdent.CreateString "cancellationToken", None, range0))
-                            (SynExpr.CreateLongIdent ct)
-                    ]
-            )
+            [
+                SynExpr.CreateLongIdent (SynLongIdent.createS "a")
+                equals
+                    (SynExpr.LongIdent (true, SynLongIdent.createS "cancellationToken", None, range0))
+                    (SynExpr.CreateLongIdent ct)
+            ]
+            |> SynExpr.CreateParenedTuple
+            |> applyFunction (SynExpr.CreateLongIdent (SynLongIdent.createS' [ "Async" ; "StartAsTask" ]))
            |> createLambda "a"

        pipeThroughFunction lambda body

+    let inline createIdent (s : string) : SynExpr = SynExpr.Ident (Ident (s, range0))
+
+    let inline createIdent' (i : Ident) : SynExpr = SynExpr.Ident i
+
+    let inline createLongIdent (ident : string list) : SynExpr =
+        SynExpr.CreateLongIdent (SynLongIdent.createS' ident)
+
+    let inline createLongIdent' (ident : Ident list) : SynExpr =
+        SynExpr.CreateLongIdent (SynLongIdent.create ident)
+
+    let inline createLet (bindings : SynBinding list) (body : SynExpr) : SynExpr =
+        SynExpr.LetOrUse (false, false, bindings, body, range0, SynExprLetOrUseTrivia.empty)
+
+    let inline createMatch (matchOn : SynExpr) (cases : SynMatchClause list) : SynExpr =
+        SynExpr.CreateMatch (matchOn, cases)
+
+    let typeAnnotate (ty : SynType) (expr : SynExpr) : SynExpr = SynExpr.CreateTyped (expr, ty)
+
+    let inline paren (e : SynExpr) : SynExpr =
+        SynExpr.Paren (e, range0, Some range0, range0)
+
+    let inline createNew (ty : SynType) (args : SynExpr) : SynExpr =
+        SynExpr.New (false, ty, paren args, range0)
+
+    let inline createWhile (cond : SynExpr) (body : SynExpr) : SynExpr =
+        SynExpr.While (DebugPointAtWhile.Yes range0, cond, body, range0)
+
+    let reraise : SynExpr = createIdent "reraise" |> applyTo (SynExpr.CreateConst ())
+
    /// {compExpr} { {lets} ; return {ret} }
    let createCompExpr (compExpr : string) (retBody : SynExpr) (lets : CompExprBinding list) : SynExpr =
        let retStatement = SynExpr.YieldOrReturn ((false, true), retBody, range0)
@@ -209,7 +243,7 @@ module internal SynExpr =
                        DebugPointAtBinding.Yes range0,
                        false,
                        true,
-                        SynPat.CreateNamed (Ident.Create lhs),
+                        SynPat.named lhs,
                        rhs,
                        [],
                        state,
@@ -218,22 +252,12 @@ module internal SynExpr =
                            EqualsRange = Some range0
                        }
                    )
-                | Let (lhs, rhs) ->
-                    SynExpr.LetOrUse (
-                        false,
-                        false,
-                        [ SynBinding.Let (pattern = SynPat.CreateNamed (Ident.Create lhs), expr = rhs) ],
-                        state,
-                        range0,
-                        {
-                            SynExprLetOrUseTrivia.InKeyword = None
-                        }
-                    )
+                | Let (lhs, rhs) -> createLet [ SynBinding.basic (SynLongIdent.createS lhs) [] rhs ] state
                | Use (lhs, rhs) ->
                    SynExpr.LetOrUse (
                        false,
                        true,
-                        [ SynBinding.Let (pattern = SynPat.CreateNamed (Ident.Create lhs), expr = rhs) ],
+                        [ SynBinding.basic (SynLongIdent.createS lhs) [] rhs ],
                        state,
                        range0,
                        {
@@ -250,32 +274,18 @@ module internal SynExpr =

    /// {expr} |> Async.AwaitTask
    let awaitTask (expr : SynExpr) : SynExpr =
-        expr
-        |> pipeThroughFunction (SynExpr.CreateLongIdent (SynLongIdent.Create [ "Async" ; "AwaitTask" ]))
+        expr |> pipeThroughFunction (createLongIdent [ "Async" ; "AwaitTask" ])

    /// {ident}.ToString ()
    /// with special casing for some types like DateTime
    let toString (ty : SynType) (ident : SynExpr) =
        match ty with
-        | DateOnly -> ident |> callMethodArg "ToString" (SynExpr.CreateConstString "yyyy-MM-dd")
-        | DateTime ->
-            ident
-            |> callMethodArg "ToString" (SynExpr.CreateConstString "yyyy-MM-ddTHH:mm:ss")
+        | DateOnly -> ident |> callMethodArg "ToString" (SynExpr.CreateConst "yyyy-MM-dd")
+        | DateTime -> ident |> callMethodArg "ToString" (SynExpr.CreateConst "yyyy-MM-ddTHH:mm:ss")
        | _ -> callMethod "ToString" ident

    let upcast' (ty : SynType) (e : SynExpr) = SynExpr.Upcast (e, ty, range0)

-    let synBindingTriviaZero (isMember : bool) =
-        {
-            SynBindingTrivia.EqualsRange = Some range0
-            InlineKeyword = None
-            LeadingKeyword =
-                if isMember then
-                    SynLeadingKeyword.Member range0
-                else
-                    SynLeadingKeyword.Let range0
-        }
-
    /// {ident} - {rhs}
    let minus (ident : SynLongIdent) (rhs : SynExpr) : SynExpr =
        SynExpr.CreateApp (
@@ -293,8 +303,7 @@ module internal SynExpr =
        )

    /// {ident} - {n}
-    let minusN (ident : SynLongIdent) (n : int) : SynExpr =
-        minus ident (SynExpr.CreateConst (SynConst.Int32 n))
+    let minusN (ident : SynLongIdent) (n : int) : SynExpr = minus ident (SynExpr.CreateConst n)

    /// {y} > {x}
    let greaterThan (x : SynExpr) (y : SynExpr) : SynExpr =
@@ -311,3 +320,17 @@ module internal SynExpr =
            ),
            x
        )
+
+    /// {y} >= {x}
+    let greaterThanOrEqual (x : SynExpr) (y : SynExpr) : SynExpr =
+        SynExpr.CreateAppInfix (
+            SynExpr.CreateLongIdent (
+                SynLongIdent.SynLongIdent (
+                    [ Ident.Create "op_GreaterThanOrEqual" ],
+                    [],
+                    [ Some (IdentTrivia.OriginalNotation ">=") ]
+                )
+            ),
+            y
+        )
+        |> applyTo x
--- a/WoofWare.Myriad.Plugins/SynExpr/SynExprLetOrUseTrivia.fs
+++ b/WoofWare.Myriad.Plugins/SynExpr/SynExprLetOrUseTrivia.fs
@@ -0,0 +1,10 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.SyntaxTrivia
+
+[<RequireQualifiedAccess>]
+module internal SynExprLetOrUseTrivia =
+    let empty : SynExprLetOrUseTrivia =
+        {
+            InKeyword = None
+        }
--- a/WoofWare.Myriad.Plugins/SynExpr/SynField.fs
+++ b/WoofWare.Myriad.Plugins/SynExpr/SynField.fs
@@ -0,0 +1,39 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Syntax
+
+type internal SynFieldData<'Ident> =
+    {
+        Attrs : SynAttribute list
+        Ident : 'Ident
+        Type : SynType
+    }
+
+[<RequireQualifiedAccess>]
+module internal SynField =
+    /// Get the useful information out of a SynField.
+    let extract (SynField (attrs, _, id, fieldType, _, _, _, _, _)) : SynFieldData<Ident option> =
+        {
+            Attrs = attrs |> List.collect (fun l -> l.Attributes)
+            Ident = id
+            Type = fieldType
+        }
+
+    let mapIdent<'a, 'b> (f : 'a -> 'b) (x : SynFieldData<'a>) : SynFieldData<'b> =
+        let ident = f x.Ident
+
+        {
+            Attrs = x.Attrs
+            Ident = ident
+            Type = x.Type
+        }
+
+    /// Throws if the field has no identifier.
+    let extractWithIdent (f : SynField) : SynFieldData<Ident> =
+        f
+        |> extract
+        |> mapIdent (fun ident ->
+            match ident with
+            | None -> failwith "expected field identifier to have a value, but it did not"
+            | Some i -> i
+        )
--- a/WoofWare.Myriad.Plugins/SynExpr/SynLongIdent.fs
+++ b/WoofWare.Myriad.Plugins/SynExpr/SynLongIdent.fs
@@ -0,0 +1,83 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Text.Range
+open Fantomas.FCS.Syntax
+
+[<RequireQualifiedAccess>]
+module internal SynLongIdent =
+
+    let create (ident : LongIdent) : SynLongIdent =
+        let commas =
+            match ident with
+            | [] -> []
+            | _ :: commas -> commas |> List.map (fun _ -> range0)
+
+        SynLongIdent.SynLongIdent (ident, commas, List.replicate ident.Length None)
+
+    let inline createI (i : Ident) : SynLongIdent = create [ i ]
+
+    let inline createS (s : string) : SynLongIdent = createI (Ident (s, range0))
+
+    let inline createS' (s : string list) : SynLongIdent =
+        create (s |> List.map (fun i -> Ident (i, range0)))
+
+    let isUnit (ident : SynLongIdent) : bool =
+        match ident.LongIdent with
+        | [ i ] when System.String.Equals (i.idText, "unit", System.StringComparison.OrdinalIgnoreCase) -> true
+        | _ -> false
+
+    let isList (ident : SynLongIdent) : bool =
+        match ident.LongIdent with
+        | [ i ] when System.String.Equals (i.idText, "list", System.StringComparison.OrdinalIgnoreCase) -> true
+        // TODO: consider FSharpList or whatever it is
+        | _ -> false
+
+    let isArray (ident : SynLongIdent) : bool =
+        match ident.LongIdent with
+        | [ i ] when
+            System.String.Equals (i.idText, "array", System.StringComparison.OrdinalIgnoreCase)
+            || System.String.Equals (i.idText, "[]", System.StringComparison.Ordinal)
+            ->
+            true
+        | _ -> false
+
+    let isOption (ident : SynLongIdent) : bool =
+        match ident.LongIdent with
+        | [ i ] when System.String.Equals (i.idText, "option", System.StringComparison.OrdinalIgnoreCase) -> true
+        // TODO: consider Microsoft.FSharp.Option or whatever it is
+        | _ -> false
+
+    let isResponse (ident : SynLongIdent) : bool =
+        match ident.LongIdent |> List.map _.idText with
+        | [ "Response" ]
+        | [ "RestEase" ; "Response" ] -> true
+        | _ -> false
+
+    let isMap (ident : SynLongIdent) : bool =
+        match ident.LongIdent |> List.map _.idText with
+        | [ "Map" ] -> true
+        | _ -> false
+
+    let isReadOnlyDictionary (ident : SynLongIdent) : bool =
+        match ident.LongIdent |> List.map _.idText with
+        | [ "IReadOnlyDictionary" ]
+        | [ "Generic" ; "IReadOnlyDictionary" ]
+        | [ "Collections" ; "Generic" ; "IReadOnlyDictionary" ]
+        | [ "System" ; "Collections" ; "Generic" ; "IReadOnlyDictionary" ] -> true
+        | _ -> false
+
+    let isDictionary (ident : SynLongIdent) : bool =
+        match ident.LongIdent |> List.map _.idText with
+        | [ "Dictionary" ]
+        | [ "Generic" ; "Dictionary" ]
+        | [ "Collections" ; "Generic" ; "Dictionary" ]
+        | [ "System" ; "Collections" ; "Generic" ; "Dictionary" ] -> true
+        | _ -> false
+
+    let isIDictionary (ident : SynLongIdent) : bool =
+        match ident.LongIdent |> List.map _.idText with
+        | [ "IDictionary" ]
+        | [ "Generic" ; "IDictionary" ]
+        | [ "Collections" ; "Generic" ; "IDictionary" ]
+        | [ "System" ; "Collections" ; "Generic" ; "IDictionary" ] -> true
+        | _ -> false
--- a/WoofWare.Myriad.Plugins/SynExpr/SynMatchClause.fs
+++ b/WoofWare.Myriad.Plugins/SynExpr/SynMatchClause.fs
@@ -0,0 +1,24 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Syntax
+open Fantomas.FCS.Text.Range
+
+[<RequireQualifiedAccess>]
+module internal SynMatchClause =
+    let create (lhs : SynPat) (rhs : SynExpr) : SynMatchClause =
+        SynMatchClause.SynMatchClause (
+            lhs,
+            None,
+            rhs,
+            range0,
+            DebugPointAtTarget.Yes,
+            {
+                ArrowRange = Some range0
+                BarRange = Some range0
+            }
+        )
+
+    let withWhere (where : SynExpr) (m : SynMatchClause) : SynMatchClause =
+        match m with
+        | SynMatchClause (synPat, _, resultExpr, range, debugPointAtTarget, synMatchClauseTrivia) ->
+            SynMatchClause (synPat, Some where, resultExpr, range, debugPointAtTarget, synMatchClauseTrivia)
--- a/WoofWare.Myriad.Plugins/SynExpr/SynMemberDefn.fs
+++ b/WoofWare.Myriad.Plugins/SynExpr/SynMemberDefn.fs
@@ -0,0 +1,61 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Syntax
+open Fantomas.FCS.SyntaxTrivia
+open Fantomas.FCS.Text.Range
+open Fantomas.FCS.Xml
+
+[<RequireQualifiedAccess>]
+module internal SynMemberDefn =
+    let private interfaceMemberSlotFlags =
+        {
+            SynMemberFlags.IsInstance = true
+            SynMemberFlags.IsDispatchSlot = true
+            SynMemberFlags.IsOverrideOrExplicitImpl = false
+            SynMemberFlags.IsFinal = false
+            SynMemberFlags.GetterOrSetterIsCompilerGenerated = false
+            SynMemberFlags.MemberKind = SynMemberKind.Member
+        }
+
+
+    let abstractMember
+        (ident : SynIdent)
+        (typars : SynTyparDecls option)
+        (arity : SynValInfo)
+        (xmlDoc : PreXmlDoc)
+        (returnType : SynType)
+        : SynMemberDefn
+        =
+        let slot =
+            SynValSig.SynValSig (
+                [],
+                ident,
+                SynValTyparDecls.SynValTyparDecls (typars, true),
+                returnType,
+                arity,
+                false,
+                false,
+                xmlDoc,
+                None,
+                None,
+                range0,
+                {
+                    EqualsRange = None
+                    WithKeyword = None
+                    InlineKeyword = None
+                    LeadingKeyword = SynLeadingKeyword.Abstract range0
+                }
+            )
+
+        SynMemberDefn.AbstractSlot (
+            slot,
+            interfaceMemberSlotFlags,
+            range0,
+            {
+                GetSetKeywords = None
+            }
+        )
+
+    let staticMember (binding : SynBinding) : SynMemberDefn =
+        let binding = SynBinding.makeStaticMember binding
+        SynMemberDefn.Member (binding, range0)
--- a/WoofWare.Myriad.Plugins/SynExpr/SynPat.fs
+++ b/WoofWare.Myriad.Plugins/SynExpr/SynPat.fs
@@ -0,0 +1,16 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Syntax
+open Fantomas.FCS.Text.Range
+
+[<RequireQualifiedAccess>]
+module internal SynPat =
+
+    let annotateType (ty : SynType) (pat : SynPat) =
+        SynPat.Paren (SynPat.Typed (pat, ty, range0), range0)
+
+    let named (s : string) : SynPat =
+        SynPat.Named (SynIdent.SynIdent (Ident (s, range0), None), false, None, range0)
+
+    let namedI (i : Ident) : SynPat =
+        SynPat.Named (SynIdent.SynIdent (i, None), false, None, range0)
--- a/WoofWare.Myriad.Plugins/SynExpr/SynType.fs
+++ b/WoofWare.Myriad.Plugins/SynExpr/SynType.fs
@@ -0,0 +1,232 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Syntax
+open Fantomas.FCS.Text.Range
+
+[<RequireQualifiedAccess>]
+module internal SynType =
+    let rec stripOptionalParen (ty : SynType) : SynType =
+        match ty with
+        | SynType.Paren (ty, _) -> stripOptionalParen ty
+        | ty -> ty
+
+    let inline createLongIdent (ident : LongIdent) : SynType =
+        SynType.LongIdent (SynLongIdent.create ident)
+
+    let inline createLongIdent' (ident : string list) : SynType =
+        SynType.LongIdent (SynLongIdent.createS' ident)
+
+    let inline named (name : string) = createLongIdent' [ name ]
+
+    let inline app' (name : SynType) (args : SynType list) : SynType =
+        if args.IsEmpty then
+            failwith "Type cannot be applied to no arguments"
+
+        SynType.App (name, Some range0, args, List.replicate (args.Length - 1) range0, Some range0, false, range0)
+
+    let inline app (name : string) (args : SynType list) : SynType = app' (named name) args
+
+    let inline appPostfix (name : string) (arg : SynType) : SynType =
+        SynType.App (named name, None, [ arg ], [], None, true, range0)
+
+    let inline funFromDomain (domain : SynType) (range : SynType) : SynType =
+        SynType.Fun (
+            domain,
+            range,
+            range0,
+            {
+                ArrowRange = range0
+            }
+        )
+
+    let inline signatureParamOfType (ty : SynType) (name : Ident option) : SynType =
+        SynType.SignatureParameter ([], false, name, ty, range0)
+
+    let inline var (ty : SynTypar) : SynType = SynType.Var (ty, range0)
+
+[<AutoOpen>]
+module internal SynTypePatterns =
+    let (|OptionType|_|) (fieldType : SynType) =
+        match fieldType with
+        | SynType.App (SynType.LongIdent ident, _, [ innerType ], _, _, _, _) when SynLongIdent.isOption ident ->
+            Some innerType
+        | _ -> None
+
+    let (|UnitType|_|) (fieldType : SynType) : unit option =
+        match fieldType with
+        | SynType.LongIdent ident when SynLongIdent.isUnit ident -> Some ()
+        | _ -> None
+
+    let (|ListType|_|) (fieldType : SynType) =
+        match fieldType with
+        | SynType.App (SynType.LongIdent ident, _, [ innerType ], _, _, _, _) when SynLongIdent.isList ident ->
+            Some innerType
+        | _ -> None
+
+    let (|ArrayType|_|) (fieldType : SynType) =
+        match fieldType with
+        | SynType.App (SynType.LongIdent ident, _, [ innerType ], _, _, _, _) when SynLongIdent.isArray ident ->
+            Some innerType
+        | SynType.Array (1, innerType, _) -> Some innerType
+        | _ -> None
+
+    let (|RestEaseResponseType|_|) (fieldType : SynType) =
+        match fieldType with
+        | SynType.App (SynType.LongIdent ident, _, [ innerType ], _, _, _, _) when SynLongIdent.isResponse ident ->
+            Some innerType
+        | _ -> None
+
+    let (|DictionaryType|_|) (fieldType : SynType) =
+        match fieldType with
+        | SynType.App (SynType.LongIdent ident, _, [ key ; value ], _, _, _, _) when SynLongIdent.isDictionary ident ->
+            Some (key, value)
+        | _ -> None
+
+    let (|IDictionaryType|_|) (fieldType : SynType) =
+        match fieldType with
+        | SynType.App (SynType.LongIdent ident, _, [ key ; value ], _, _, _, _) when SynLongIdent.isIDictionary ident ->
+            Some (key, value)
+        | _ -> None
+
+    let (|IReadOnlyDictionaryType|_|) (fieldType : SynType) =
+        match fieldType with
+        | SynType.App (SynType.LongIdent ident, _, [ key ; value ], _, _, _, _) when
+            SynLongIdent.isReadOnlyDictionary ident
+            ->
+            Some (key, value)
+        | _ -> None
+
+    let (|MapType|_|) (fieldType : SynType) =
+        match fieldType with
+        | SynType.App (SynType.LongIdent ident, _, [ key ; value ], _, _, _, _) when SynLongIdent.isMap ident ->
+            Some (key, value)
+        | _ -> None
+
+    let (|BigInt|_|) (fieldType : SynType) : unit option =
+        match fieldType with
+        | SynType.LongIdent ident ->
+            match ident.LongIdent |> List.map _.idText with
+            | [ "bigint" ]
+            | [ "BigInteger" ]
+            | [ "Numerics" ; "BigInteger" ]
+            | [ "System" ; "Numerics" ; "BigInteger" ] -> Some ()
+            | _ -> None
+        | _ -> None
+
+    /// Returns the type, qualified as in e.g. `System.Boolean`.
+    let (|PrimitiveType|_|) (fieldType : SynType) : LongIdent option =
+        match fieldType with
+        | SynType.LongIdent ident ->
+            match ident.LongIdent with
+            | [ i ] -> Primitives.qualifyType i.idText
+            | _ -> None
+        | _ -> None
+
+    let (|String|_|) (fieldType : SynType) : unit option =
+        match fieldType with
+        | SynType.LongIdent ident ->
+            match ident.LongIdent with
+            | [ i ] ->
+                [ "string" ]
+                |> List.tryFind (fun s -> s = i.idText)
+                |> Option.map ignore<string>
+            | _ -> None
+        | _ -> None
+
+    let (|Byte|_|) (fieldType : SynType) : unit option =
+        match fieldType with
+        | SynType.LongIdent ident ->
+            match ident.LongIdent with
+            | [ i ] -> [ "byte" ] |> List.tryFind (fun s -> s = i.idText) |> Option.map ignore<string>
+            | _ -> None
+        | _ -> None
+
+    let (|Guid|_|) (fieldType : SynType) : unit option =
+        match fieldType with
+        | SynType.LongIdent ident ->
+            match ident.LongIdent |> List.map (fun i -> i.idText) with
+            | [ "System" ; "Guid" ]
+            | [ "Guid" ] -> Some ()
+            | _ -> None
+        | _ -> None
+
+    let (|HttpResponseMessage|_|) (fieldType : SynType) : unit option =
+        match fieldType with
+        | SynType.LongIdent ident ->
+            match ident.LongIdent |> List.map (fun i -> i.idText) with
+            | [ "System" ; "Net" ; "Http" ; "HttpResponseMessage" ]
+            | [ "Net" ; "Http" ; "HttpResponseMessage" ]
+            | [ "Http" ; "HttpResponseMessage" ]
+            | [ "HttpResponseMessage" ] -> Some ()
+            | _ -> None
+        | _ -> None
+
+    let (|HttpContent|_|) (fieldType : SynType) : unit option =
+        match fieldType with
+        | SynType.LongIdent ident ->
+            match ident.LongIdent |> List.map (fun i -> i.idText) with
+            | [ "System" ; "Net" ; "Http" ; "HttpContent" ]
+            | [ "Net" ; "Http" ; "HttpContent" ]
+            | [ "Http" ; "HttpContent" ]
+            | [ "HttpContent" ] -> Some ()
+            | _ -> None
+        | _ -> None
+
+    let (|Stream|_|) (fieldType : SynType) : unit option =
+        match fieldType with
+        | SynType.LongIdent ident ->
+            match ident.LongIdent |> List.map (fun i -> i.idText) with
+            | [ "System" ; "IO" ; "Stream" ]
+            | [ "IO" ; "Stream" ]
+            | [ "Stream" ] -> Some ()
+            | _ -> None
+        | _ -> None
+
+    let (|NumberType|_|) (fieldType : SynType) =
+        match fieldType with
+        | SynType.LongIdent ident ->
+            match ident.LongIdent with
+            | [ i ] -> [ "string" ; "float" ; "int" ; "bool" ] |> List.tryFind (fun s -> s = i.idText)
+            | _ -> None
+        | _ -> None
+
+    let (|DateOnly|_|) (fieldType : SynType) =
+        match fieldType with
+        | SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)) ->
+            match ident |> List.map (fun i -> i.idText) with
+            | [ "System" ; "DateOnly" ]
+            | [ "DateOnly" ] -> Some ()
+            | _ -> None
+        | _ -> None
+
+    let (|DateTime|_|) (fieldType : SynType) =
+        match fieldType with
+        | SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)) ->
+            match ident |> List.map (fun i -> i.idText) with
+            | [ "System" ; "DateTime" ]
+            | [ "DateTime" ] -> Some ()
+            | _ -> None
+        | _ -> None
+
+    let (|Uri|_|) (fieldType : SynType) =
+        match fieldType with
+        | SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)) ->
+            match ident |> List.map (fun i -> i.idText) with
+            | [ "System" ; "Uri" ]
+            | [ "Uri" ] -> Some ()
+            | _ -> None
+        | _ -> None
+
+    let (|Task|_|) (fieldType : SynType) : SynType option =
+        match fieldType with
+        | SynType.App (SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)), _, args, _, _, _, _) ->
+            match ident |> List.map (fun i -> i.idText) with
+            | [ "Task" ]
+            | [ "Tasks" ; "Task" ]
+            | [ "Threading" ; "Tasks" ; "Task" ]
+            | [ "System" ; "Threading" ; "Tasks" ; "Task" ] ->
+                match args with
+                | [ arg ] -> Some arg
+                | _ -> failwithf "Expected Task to be applied to exactly one arg, but got: %+A" args
+            | _ -> None
+        | _ -> None
--- a/WoofWare.Myriad.Plugins/SynExpr/SynTypeDefn.fs
+++ b/WoofWare.Myriad.Plugins/SynExpr/SynTypeDefn.fs
@@ -0,0 +1,27 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Syntax
+open Fantomas.FCS.SyntaxTrivia
+open Fantomas.FCS.Text.Range
+
+[<RequireQualifiedAccess>]
+module internal SynTypeDefn =
+
+    let inline create (componentInfo : SynComponentInfo) (repr : SynTypeDefnRepr) : SynTypeDefn =
+        SynTypeDefn.SynTypeDefn (
+            componentInfo,
+            repr,
+            [],
+            None,
+            range0,
+            {
+                LeadingKeyword = SynTypeDefnLeadingKeyword.Type range0
+                EqualsRange = Some range0
+                WithKeyword = None
+            }
+        )
+
+    let inline withMemberDefns (members : SynMemberDefn list) (r : SynTypeDefn) : SynTypeDefn =
+        match r with
+        | SynTypeDefn (typeInfo, typeRepr, _, ctor, range, trivia) ->
+            SynTypeDefn.SynTypeDefn (typeInfo, typeRepr, members, ctor, range, trivia)
--- a/WoofWare.Myriad.Plugins/SynExpr/SynTypeDefnRepr.fs
+++ b/WoofWare.Myriad.Plugins/SynExpr/SynTypeDefnRepr.fs
@@ -0,0 +1,20 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Syntax
+open Fantomas.FCS.Text.Range
+
+[<RequireQualifiedAccess>]
+module internal SynTypeDefnRepr =
+
+    let inline interfaceType (mems : SynMemberDefns) : SynTypeDefnRepr =
+        SynTypeDefnRepr.ObjectModel (SynTypeDefnKind.Unspecified, mems, range0)
+
+    /// Indicates the body of a `type Foo with {body}` extension type declaration.
+    let inline augmentation () : SynTypeDefnRepr =
+        SynTypeDefnRepr.ObjectModel (SynTypeDefnKind.Augmentation range0, [], range0)
+
+    let inline union (cases : SynUnionCase list) : SynTypeDefnRepr =
+        SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Union (None, cases, range0), range0)
+
+    let inline record (fields : SynField list) : SynTypeDefnRepr =
+        SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Record (None, fields, range0), range0)
--- a/WoofWare.Myriad.Plugins/SynExpr/SynUnionCase.fs
+++ b/WoofWare.Myriad.Plugins/SynExpr/SynUnionCase.fs
@@ -0,0 +1,41 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Syntax
+
+type internal UnionCase<'Ident> =
+    {
+        Fields : SynFieldData<'Ident> list
+        Attrs : SynAttribute list
+        Ident : Ident
+    }
+
+[<RequireQualifiedAccess>]
+module internal UnionCase =
+    let mapIdentFields<'a, 'b> (f : 'a -> 'b) (unionCase : UnionCase<'a>) : UnionCase<'b> =
+        {
+            Fields = unionCase.Fields |> List.map (SynField.mapIdent f)
+            Attrs = unionCase.Attrs
+            Ident = unionCase.Ident
+        }
+
+[<RequireQualifiedAccess>]
+module internal SynUnionCase =
+    let extract (SynUnionCase (attrs, id, caseType, _, _, _, _)) : UnionCase<Ident option> =
+        match caseType with
+        | SynUnionCaseKind.FullType _ -> failwith "WoofWare.Myriad does not support FullType union cases."
+        | SynUnionCaseKind.Fields fields ->
+
+        let fields = fields |> List.map SynField.extract
+
+        let id =
+            match id with
+            | SynIdent.SynIdent (ident, _) -> ident
+
+        // As far as I can tell, there's no way to get any attributes here? :shrug:
+        let attrs = attrs |> List.collect (fun l -> l.Attributes)
+
+        {
+            Fields = fields
+            Attrs = attrs
+            Ident = id
+        }
--- a/WoofWare.Myriad.Plugins/SynType.fs
+++ b/WoofWare.Myriad.Plugins/SynType.fs
@@ -1,10 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Syntax
-
-[<RequireQualifiedAccess>]
-module internal SynType =
-    let rec stripOptionalParen (ty : SynType) : SynType =
-        match ty with
-        | SynType.Paren (ty, _) -> stripOptionalParen ty
-        | ty -> ty
--- a/WoofWare.Myriad.Plugins/WoofWare.Myriad.Plugins.fsproj
+++ b/WoofWare.Myriad.Plugins/WoofWare.Myriad.Plugins.fsproj
@@ -25,11 +25,26 @@

  <ItemGroup>
    <Compile Include="List.fs"/>
-    <Compile Include="Ident.fs" />
-    <Compile Include="AstHelper.fs"/>
-    <Compile Include="SynExpr.fs"/>
-    <Compile Include="SynType.fs"/>
-    <Compile Include="SynAttribute.fs"/>
+    <Compile Include="Primitives.fs" />
+    <Compile Include="SynExpr\PreXmlDoc.fs" />
+    <Compile Include="SynExpr\Ident.fs" />
+    <Compile Include="SynExpr\SynLongIdent.fs" />
+    <Compile Include="SynExpr\SynExprLetOrUseTrivia.fs" />
+    <Compile Include="SynExpr\SynBinding.fs" />
+    <Compile Include="SynExpr\SynType.fs" />
+    <Compile Include="SynExpr\SynMatchClause.fs" />
+    <Compile Include="SynExpr\SynPat.fs" />
+    <Compile Include="SynExpr\CompExpr.fs" />
+    <Compile Include="SynExpr\SynExpr.fs" />
+    <Compile Include="SynExpr\SynAttribute.fs" />
+    <Compile Include="SynExpr\SynArgPats.fs" />
+    <Compile Include="SynExpr\SynField.fs" />
+    <Compile Include="SynExpr\SynUnionCase.fs" />
+    <Compile Include="SynExpr\SynTypeDefnRepr.fs" />
+    <Compile Include="SynExpr\SynTypeDefn.fs" />
+    <Compile Include="SynExpr\SynComponentInfo.fs" />
+    <Compile Include="SynExpr\SynMemberDefn.fs" />
+    <Compile Include="AstHelper.fs" />
    <Compile Include="RemoveOptionsGenerator.fs"/>
    <Compile Include="InterfaceMockGenerator.fs"/>
    <Compile Include="JsonSerializeGenerator.fs"/>
--- a/WoofWare.Myriad.Plugins/version.json
+++ b/WoofWare.Myriad.Plugins/version.json
@@ -3,5 +3,11 @@
  "publicReleaseRefSpec": [
    "^refs/heads/main$"
  ],
-  "pathFilters": null
-}
+  "pathFilters": [
+    ":/",
+    ":^WoofWare.Myriad.Plugins.Test/",
+    ":^WoofWare.Myriad.Plugins.Attributes/Test/",
+    ":^/.github/",
+    ":^/CHANGELOG.md"
+  ]
+}
--- a/analyzers/analyzers.fsproj
+++ b/analyzers/analyzers.fsproj
@@ -10,7 +10,7 @@
  </PropertyGroup>

  <ItemGroup>
-    <PackageDownload Include="G-Research.FSharp.Analyzers" Version="[0.8.0]" />
+    <PackageDownload Include="G-Research.FSharp.Analyzers" Version="[0.10.0]" />
  </ItemGroup>

 </Project>
--- a/flake.nix
+++ b/flake.nix
@@ -7,7 +7,6 @@
  };

  outputs = {
-    self,
    nixpkgs,
    flake-utils,
    ...
--- a/nix/deps.nix
+++ b/nix/deps.nix
@@ -3,23 +3,18 @@
 {fetchNuGet}: [
  (fetchNuGet {
    pname = "fsharp-analyzers";
-    version = "0.24.0";
-    sha256 = "sha256-cNaM/yHI28sHDGamKMrU237ltOyrR+8vPNUImB5RxjU=";
+    version = "0.26.0";
+    sha256 = "sha256-60Bl36LOb/zVNdH2SBSuQ5O41lP9dKTNZbs5vvYs+3U=";
  })
  (fetchNuGet {
    pname = "fantomas";
-    version = "6.3.0-alpha-007";
-    sha256 = "sha256-uZw6h6k/DS4BcYtK9cv8TLS0H8MZDO3WBaPPTdtTgu0=";
+    version = "6.3.4";
+    sha256 = "sha256-1aWqZynBkQoznenGoP0sbf1PcUXAbcHiWyECuv89xa0=";
  })
  (fetchNuGet {
    pname = "ApiSurface";
-    version = "4.0.28";
-    sha256 = "1gg0dqbgbb8aqn2lxi5gf2wq969kgskby5wph6m2b3hdkz7265ak";
-  })
-  (fetchNuGet {
-    pname = "coverlet.collector";
-    version = "6.0.0";
-    sha256 = "12j34vrkmph8lspbafnqmfnj2qvysz1jcrks2khw798s6dwv0j90";
+    version = "4.0.40";
+    sha256 = "1c9z0b6minlripwrjmv4yd5w8zj4lcpak4x41izh7ygx8kgmbvx0";
  })
  (fetchNuGet {
    pname = "Fantomas.Core";
@@ -123,23 +118,13 @@
  })
  (fetchNuGet {
    pname = "Microsoft.CodeCoverage";
-    version = "17.8.0";
-    sha256 = "173wjadp3gan4x2jfjchngnc4ca4mb95h1sbb28jydfkfw0z1zvj";
-  })
-  (fetchNuGet {
-    pname = "Microsoft.CodeCoverage";
-    version = "17.9.0";
-    sha256 = "1gljgi69k0fz8vy8bn6xlyxabj6q4vls2zza9wz7ng6ix3irm89r";
+    version = "17.10.0";
+    sha256 = "0s0v7jmrq85n356xv7zixvwa4z94fszjcr5vll8x4im1a2lp00f9";
  })
  (fetchNuGet {
    pname = "Microsoft.NET.Test.Sdk";
-    version = "17.8.0";
-    sha256 = "1syvl3g0hbrcgfi9rq6pld8s8hqqww4dflf1lxn59ccddyyx0gmv";
-  })
-  (fetchNuGet {
-    pname = "Microsoft.NET.Test.Sdk";
-    version = "17.9.0";
-    sha256 = "1lls1fly2gr1n9n1xyl9k33l2v4pwfmylyzkq8v4v5ldnwkl1zdb";
+    version = "17.10.0";
+    sha256 = "13g8fwl09li8fc71nk13dgkb7gahd4qhamyg2xby7am63nlchhdf";
  })
  (fetchNuGet {
    pname = "Microsoft.NETCore.App.Host.linux-arm64";
@@ -283,23 +268,13 @@
  })
  (fetchNuGet {
    pname = "Microsoft.TestPlatform.ObjectModel";
-    version = "17.8.0";
-    sha256 = "0b0i7lmkrcfvim8i3l93gwqvkhhhfzd53fqfnygdqvkg6np0cg7m";
-  })
-  (fetchNuGet {
-    pname = "Microsoft.TestPlatform.ObjectModel";
-    version = "17.9.0";
-    sha256 = "1kgsl9w9fganbm9wvlkqgk0ag9hfi58z88rkfybc6kvg78bx89ca";
+    version = "17.10.0";
+    sha256 = "07j69cw8r39533w4p39mnj00kahazz38760in3jfc45kmlcdb26x";
  })
  (fetchNuGet {
    pname = "Microsoft.TestPlatform.TestHost";
-    version = "17.8.0";
-    sha256 = "0f5jah93kjkvxwmhwb78lw11m9pkkq9fvf135hpymmmpxqbdh97q";
-  })
-  (fetchNuGet {
-    pname = "Microsoft.TestPlatform.TestHost";
-    version = "17.9.0";
-    sha256 = "19ffh31a1jxzn8j69m1vnk5hyfz3dbxmflq77b8x82zybiilh5nl";
+    version = "17.10.0";
+    sha256 = "1bl471s7fx9jycr0cc8rylwf34mrvlg9qn1an6l86nisavfcyb7v";
  })
  (fetchNuGet {
    pname = "Myriad.Core";
@@ -316,11 +291,6 @@
    version = "3.6.133";
    sha256 = "1cdw8krvsnx0n34f7fm5hiiy7bs6h3asvncqcikc0g46l50w2j80";
  })
-  (fetchNuGet {
-    pname = "NETStandard.Library";
-    version = "2.0.0";
-    sha256 = "1bc4ba8ahgk15m8k4nd7x406nhi0kwqzbgjk2dmw52ss553xz7iy";
-  })
  (fetchNuGet {
    pname = "NETStandard.Library";
    version = "2.0.3";
@@ -338,48 +308,38 @@
  })
  (fetchNuGet {
    pname = "NuGet.Common";
-    version = "6.8.0";
-    sha256 = "0l3ij8iwy7wj6s7f93lzi9168r4wz8zyin6a08iwgk7hvq44cia1";
+    version = "6.10.0";
+    sha256 = "0nizrnilmlcqbm945293h8q3wfqfchb4xi8g50x4kjn0rbpd1kbh";
  })
  (fetchNuGet {
    pname = "NuGet.Configuration";
-    version = "6.8.0";
-    sha256 = "0x03p408smkmv1gv7pmvsia4lkn0xaj4wfrkl58pjf8bbv51y0yw";
+    version = "6.10.0";
+    sha256 = "1aqaknaawnqx4mnvx9qw73wvj48jjzv0d78dzwl7m9zjlrl9myhz";
  })
  (fetchNuGet {
    pname = "NuGet.Frameworks";
-    version = "6.5.0";
-    sha256 = "0s37d1p4md0k6d4cy6sq36f2dgkd9qfbzapxhkvi8awwh0vrynhj";
-  })
-  (fetchNuGet {
-    pname = "NuGet.Frameworks";
-    version = "6.8.0";
-    sha256 = "0i2xvhgkjkjr496i3pg8hamwv6505fia45qhn7jg5m01wb3cvsjl";
+    version = "6.10.0";
+    sha256 = "0hrd8y31zx9a0wps49czw0qgbrakb49zn3abfgylc9xrq990zkqk";
  })
  (fetchNuGet {
    pname = "NuGet.Packaging";
-    version = "6.8.0";
-    sha256 = "031z4s905bxi94h3f0qy4j1b6jxdxgqgpkzqvvpfxch07szxcbim";
+    version = "6.10.0";
+    sha256 = "18s53cvrf51lihmaqqdf48p2qi6ky1l48jv0hvbp76cxwdg7rba4";
  })
  (fetchNuGet {
    pname = "NuGet.Protocol";
-    version = "6.7.0";
-    sha256 = "1v5ibnq2mp801vw68zyj169hkj3xm7h55824i33n1jxxj2vs3vbk";
+    version = "6.10.0";
+    sha256 = "0hmv4q0ks9i34mfgpb13l01la9v3jjllfh1qd3aqv105xrqrdxac";
  })
  (fetchNuGet {
    pname = "NuGet.Versioning";
-    version = "6.8.0";
-    sha256 = "1sd25h46fd12ng780r02q4ijcx1imkb53kj1y2y7cwg5myh537ks";
+    version = "6.10.0";
+    sha256 = "1x19njx4x0sw9fz8y5fibi15xfsrw5avir0cx0599yd7p3ykik5g";
  })
  (fetchNuGet {
    pname = "NUnit";
-    version = "3.13.3";
-    sha256 = "0wdzfkygqnr73s6lpxg5b1pwaqz9f414fxpvpdmf72bvh4jaqzv6";
-  })
-  (fetchNuGet {
-    pname = "NUnit";
-    version = "4.0.1";
-    sha256 = "0jgiq3dbwli5r70j0bw7021d69r7bhr58s8kphlpjmf7k47l5pcd";
+    version = "4.1.0";
+    sha256 = "0fj6xwgqaxq3mrai86bklclfmjkzf038mrslwfqf4ignaz9f7g5j";
  })
  (fetchNuGet {
    pname = "NUnit3TestAdapter";
@@ -473,12 +433,12 @@
  })
  (fetchNuGet {
    pname = "System.Text.Encodings.Web";
-    version = "6.0.0";
-    sha256 = "06n9ql3fmhpjl32g3492sj181zjml5dlcc5l76xq2h38c4f87sai";
+    version = "7.0.0";
+    sha256 = "1151hbyrcf8kyg1jz8k9awpbic98lwz9x129rg7zk1wrs6vjlpxl";
  })
  (fetchNuGet {
    pname = "System.Text.Json";
-    version = "6.0.0";
-    sha256 = "1si2my1g0q0qv1hiqnji4xh9wd05qavxnzj9dwgs23iqvgjky0gl";
+    version = "7.0.3";
+    sha256 = "0zjrnc9lshagm6kdb9bdh45dmlnkpwcpyssa896sda93ngbmj8k9";
  })
 ]
Author	SHA1	Message	Date
Patrick Stevens	8e47f39efc	Make more extensive use of our own DSLs (#153 )	2024-05-31 16:54:05 +00:00
Patrick Stevens	6942ba42b9	Update changelog (#152 )	2024-05-30 22:37:05 +01:00
Patrick Stevens	b98080690d	Finish DU parsing (#151 )	2024-05-30 22:27:15 +01:00
Patrick Stevens	81b7e5361d	Another grand refactor (#150 )	2024-05-30 20:34:53 +01:00
Patrick Stevens	94b88a4143	Reduce duplication (#149 )	2024-05-30 14:28:56 +01:00
Patrick Stevens	ed3ffecb52	Fix and test GitHub release script (#148 )	2024-05-30 12:32:40 +00:00
Patrick Stevens	c696dcf31f	Fix curl failing logic (#147 )	2024-05-30 11:35:30 +00:00
Patrick Stevens	d5bb2726d3	Tighten the tagging logic (#146 )	2024-05-30 11:28:43 +00:00
Patrick Stevens	f17290d0f1	Check generation of files is accurate (#145 )	2024-05-30 12:10:49 +01:00
Patrick Stevens	35cd94cba1	Add JSON serialisation of DUs (#144 )	2024-05-30 12:00:55 +01:00
Patrick Stevens	1b3eb03380	NerdBank.GitVersioning heights (#143 )	2024-05-29 00:44:16 +01:00
dependabot[bot]	b846ce08a3	Bump Microsoft.NET.Test.Sdk from 17.9.0 to 17.10.0 (#141 ) * Bump Microsoft.NET.Test.Sdk from 17.9.0 to 17.10.0 Bumps [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest) from 17.9.0 to 17.10.0. - [Release notes](https://github.com/microsoft/vstest/releases) - [Changelog](https://github.com/microsoft/vstest/blob/main/docs/releases.md) - [Commits](https://github.com/microsoft/vstest/compare/v17.9.0...v17.10.0) --- updated-dependencies: - dependency-name: Microsoft.NET.Test.Sdk dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com> * Bump ApiSurface from 4.0.39 to 4.0.40 Bumps [ApiSurface](https://github.com/G-Research/ApiSurface) from 4.0.39 to 4.0.40. - [Release notes](https://github.com/G-Research/ApiSurface/releases) - [Commits](https://github.com/G-Research/ApiSurface/compare/ApiSurface.4.0.39...ApiSurface.4.0.40) --- updated-dependencies: - dependency-name: ApiSurface dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> * Update deps --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Smaug123 <3138005+Smaug123@users.noreply.github.com>	2024-05-27 12:03:40 +01:00
Patrick Stevens	4b9f63d374	Express HttpClient as extension method (#140 )	2024-05-24 22:09:33 +01:00
Patrick Stevens	b9ba07a8a7	JSON parse all primitive types (#139 )	2024-05-24 21:19:04 +01:00
Patrick Stevens	e80ed51498	Strip parens in Path parameter (#138 )	2024-05-24 20:36:12 +01:00
dependabot[bot]	61b07ad802	Bump fsharp-analyzers from 0.25.0 to 0.26.0 (#134 ) * Bump fsharp-analyzers from 0.25.0 to 0.26.0 Bumps [fsharp-analyzers](https://github.com/ionide/FSharp.Analyzers.SDK) from 0.25.0 to 0.26.0. - [Release notes](https://github.com/ionide/FSharp.Analyzers.SDK/releases) - [Changelog](https://github.com/ionide/FSharp.Analyzers.SDK/blob/main/CHANGELOG.md) - [Commits](https://github.com/ionide/FSharp.Analyzers.SDK/compare/v0.25.0...v0.26.0) --- updated-dependencies: - dependency-name: fsharp-analyzers dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com> --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Smaug123 <3138005+Smaug123@users.noreply.github.com>	2024-05-20 19:02:54 +00:00
dependabot[bot]	59369bcb94	Bump cachix/install-nix-action from 26 to 27 (#133 )	2024-05-20 12:47:58 +01:00
dependabot[bot]	072169e4e3	Bump ApiSurface from 4.0.36 to 4.0.39 (#132 ) * Bump ApiSurface from 4.0.36 to 4.0.39 Bumps [ApiSurface](https://github.com/G-Research/ApiSurface) from 4.0.36 to 4.0.39. - [Release notes](https://github.com/G-Research/ApiSurface/releases) - [Commits](https://github.com/G-Research/ApiSurface/compare/ApiSurface.4.0.36...ApiSurface.4.0.39) --- updated-dependencies: - dependency-name: ApiSurface dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> * Bump deps --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Smaug123 <3138005+Smaug123@users.noreply.github.com>	2024-05-06 13:59:29 +01:00
Patrick Stevens	91136a25ab	Enable query params in Get request endpoint (#131 )	2024-04-30 19:03:20 +00:00
Patrick Stevens	c51038448a	Be more forgiving about the source of the attributes (#129 )	2024-04-29 20:46:14 +01:00
Patrick Stevens	09780efb07	Add RestEase attributes (#128 )	2024-04-29 17:51:26 +01:00
dependabot[bot]	f562271c12	Bump fantomas from 6.3.3 to 6.3.4 (#126 ) * Bump ApiSurface from 4.0.33 to 4.0.36 Bumps [ApiSurface](https://github.com/G-Research/ApiSurface) from 4.0.33 to 4.0.36. - [Release notes](https://github.com/G-Research/ApiSurface/releases) - [Commits](https://github.com/G-Research/ApiSurface/compare/ApiSurface.4.0.33...ApiSurface.4.0.36) --- updated-dependencies: - dependency-name: ApiSurface dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> * Bump fantomas from 6.3.3 to 6.3.4 Bumps [fantomas](https://github.com/fsprojects/fantomas) from 6.3.3 to 6.3.4. - [Release notes](https://github.com/fsprojects/fantomas/releases) - [Changelog](https://github.com/fsprojects/fantomas/blob/main/CHANGELOG.md) - [Commits](https://github.com/fsprojects/fantomas/compare/v6.3.3...v6.3.4) --- updated-dependencies: - dependency-name: fantomas dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> * Drive-by * Fix deps --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Smaug123 <3138005+Smaug123@users.noreply.github.com>	2024-04-22 23:36:02 +01:00
Patrick Stevens	e3081c3136	Deal with unit type in generated mock (#124 )	2024-04-17 08:44:31 +01:00
Patrick Stevens	232d2ba5ec	Relax arg checking strictness (#123 )	2024-04-16 22:47:06 +01:00
Patrick Stevens	f7458f521e	Track inheritance in GenerateMock (#122 )	2024-04-16 22:23:32 +01:00
dependabot[bot]	bfc25a672b	Bump fantomas from 6.3.0 to 6.3.3 (#120 ) * Bump fantomas from 6.3.0 to 6.3.3 Bumps [fantomas](https://github.com/fsprojects/fantomas) from 6.3.0 to 6.3.3. - [Release notes](https://github.com/fsprojects/fantomas/releases) - [Changelog](https://github.com/fsprojects/fantomas/blob/main/CHANGELOG.md) - [Commits](https://github.com/fsprojects/fantomas/compare/v6.3.0...v6.3.3) --- updated-dependencies: - dependency-name: fantomas dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> * Fix dep --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Smaug123 <3138005+Smaug123@users.noreply.github.com>	2024-04-15 21:23:09 +00:00
dependabot[bot]	af7fcb3028	Bump fantomas from 6.3.0-alpha-008 to 6.3.0 (#118 ) * Bump fantomas from 6.3.0-alpha-008 to 6.3.0 Bumps [fantomas](https://github.com/fsprojects/fantomas) from 6.3.0-alpha-008 to 6.3.0. - [Release notes](https://github.com/fsprojects/fantomas/releases) - [Changelog](https://github.com/fsprojects/fantomas/blob/main/CHANGELOG.md) - [Commits](https://github.com/fsprojects/fantomas/commits/v6.3.0) --- updated-dependencies: - dependency-name: fantomas dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com>	2024-03-19 23:07:38 +00:00
dependabot[bot]	91853b1fff	Bump cachix/install-nix-action from 25 to 26 (#116 )	2024-03-11 10:10:04 +00:00
dependabot[bot]	1144e93c1c	Bump ApiSurface from 4.0.30 to 4.0.33 (#115 ) * Bump NUnit from 3.13.3 to 4.1.0 Bumps [NUnit](https://github.com/nunit/nunit) from 3.13.3 to 4.1.0. - [Release notes](https://github.com/nunit/nunit/releases) - [Changelog](https://github.com/nunit/nunit/blob/master/CHANGES.md) - [Commits](https://github.com/nunit/nunit/compare/v3.13.3...4.1.0) --- updated-dependencies: - dependency-name: NUnit dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com> * Fix deps * Bump NUnit from 4.0.1 to 4.1.0 Bumps [NUnit](https://github.com/nunit/nunit) from 4.0.1 to 4.1.0. - [Release notes](https://github.com/nunit/nunit/releases) - [Changelog](https://github.com/nunit/nunit/blob/master/CHANGES.md) - [Commits](https://github.com/nunit/nunit/compare/v4.0.1...4.1.0) --- updated-dependencies: - dependency-name: NUnit dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com> * Bump fantomas from 6.3.0-alpha-007 to 6.3.0-alpha-008 Bumps [fantomas](https://github.com/fsprojects/fantomas) from 6.3.0-alpha-007 to 6.3.0-alpha-008. - [Release notes](https://github.com/fsprojects/fantomas/releases) - [Changelog](https://github.com/fsprojects/fantomas/blob/main/CHANGELOG.md) - [Commits](https://github.com/fsprojects/fantomas/commits) --- updated-dependencies: - dependency-name: fantomas dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> * Bump ApiSurface from 4.0.30 to 4.0.33 Bumps [ApiSurface](https://github.com/G-Research/ApiSurface) from 4.0.30 to 4.0.33. - [Release notes](https://github.com/G-Research/ApiSurface/releases) - [Commits](https://github.com/G-Research/ApiSurface/commits/ApiSurface.4.0.33) --- updated-dependencies: - dependency-name: ApiSurface dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> * Bump lots of deps --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Smaug123 <patrick+github@patrickstevens.co.uk>	2024-03-04 19:43:53 +00:00
dependabot[bot]	d899d77ae2	Bump NUnit from 3.13.3 to 4.1.0 (#110 ) * Bump NUnit from 3.13.3 to 4.1.0 Bumps [NUnit](https://github.com/nunit/nunit) from 3.13.3 to 4.1.0. - [Release notes](https://github.com/nunit/nunit/releases) - [Changelog](https://github.com/nunit/nunit/blob/master/CHANGES.md) - [Commits](https://github.com/nunit/nunit/compare/v3.13.3...4.1.0) --- updated-dependencies: - dependency-name: NUnit dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com> * Fix deps --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Smaug123 <patrick+github@patrickstevens.co.uk>	2024-02-26 19:00:19 +00:00
Patrick Stevens	a2ad430b2f	Fix end-of-line config (#109 )	2024-02-26 18:33:29 +00:00
Patrick Stevens	9e36986bc7	Fix GitHub releases process (#108 )	2024-02-25 11:57:55 +00:00
Patrick Stevens	679c66885d	Check out code during GitHub Action tag (#107 )	2024-02-25 10:19:53 +00:00
Patrick Stevens	246da41672	GitHub releases (#105 )	2024-02-25 10:04:12 +00:00
dependabot[bot]	d07541c2c2	Bump Microsoft.NET.Test.Sdk from 17.8.0 to 17.9.0 (#102 ) * Bump Microsoft.NET.Test.Sdk from 17.8.0 to 17.9.0 Bumps [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest) from 17.8.0 to 17.9.0. - [Release notes](https://github.com/microsoft/vstest/releases) - [Changelog](https://github.com/microsoft/vstest/blob/main/docs/releases.md) - [Commits](https://github.com/microsoft/vstest/compare/v17.8.0...v17.9.0) --- updated-dependencies: - dependency-name: Microsoft.NET.Test.Sdk dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com> * Bump ApiSurface from 4.0.28 to 4.0.30 Bumps [ApiSurface](https://github.com/G-Research/ApiSurface) from 4.0.28 to 4.0.30. - [Commits](https://github.com/G-Research/ApiSurface/commits) --- updated-dependencies: - dependency-name: ApiSurface dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> * Bump fsharp-analyzers from 0.24.0 to 0.25.0 Bumps [fsharp-analyzers](https://github.com/ionide/FSharp.Analyzers.SDK) from 0.24.0 to 0.25.0. - [Release notes](https://github.com/ionide/FSharp.Analyzers.SDK/releases) - [Changelog](https://github.com/ionide/FSharp.Analyzers.SDK/blob/main/CHANGELOG.md) - [Commits](https://github.com/ionide/FSharp.Analyzers.SDK/compare/v0.24.0...v0.25.0) --- updated-dependencies: - dependency-name: fsharp-analyzers dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com> * Bump deps * Fix * Bump analysers * Fix --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Smaug123 <patrick+github@patrickstevens.co.uk>	2024-02-19 18:11:35 +00:00
Patrick Stevens	7b49505064	Absolute bare-bones support for generics in cata (#101 )	2024-02-19 00:57:14 +00:00
Patrick Stevens	3209372b5b	Add another instance of MyList (#100 )	2024-02-18 14:13:34 +00:00
Patrick Stevens	1bbbf4bd06	Fix a bug in the cata (#98 )	2024-02-18 14:04:59 +00:00