anchor.diff:          let! recordBindingExprTree = tryFindRecordBindingExpTree pos src
           let caretColumn = pos.Column
           let expr = recordBindingExprTree.Expression
  -
  -        let insertionPos =
  -            RecordStubsInsertionPosition.FromRecordExpression recordBindingExprTree
  +        let insertionPos = RecordStubsInsertionPosition.FromRecordExpression recordBindingExprTree
   
           return recordBindingExprTree, insertionPos
       }
  
positive.code:     parseResults.ParseTree
      |> Option.bind (RecordStubGenerator.tryFindRecordBinding pos)
  
  let tokenizeLine (src: string) (lineIdx1: int) =
      let lines =
          src.Split('\n')
          |> Array.mapi (fun i line -> i, line)
          |> Map.ofArray
  
      let lineIdx0 = lineIdx1 - 1 
      let line = lines.[lineIdx0]
      Lexer.tokenizeLine src args (lineIdx0) line Lexer.queryLexState
  
  let tryGetLeftPosOfFirstRecordField (recordExprCategory: RecordBinding) =
      match recordExprCategory.FieldExpressionList with
      | fieldInfo :: _ ->
  
negative.code: let x: MyRecord = { Field1 = failwith ""
                      Field2 = failwith ""
                      Field3 = failwith "" }"""
  
  [<Test>]
  let ``multiple-field typed record stub generation (2)`` () =
      """
  type Record = { Field1: int; Field2: int }
  let x = { } : Record"""
      |> insertStubFromPos (Pos.fromZ 2 14)
      |> assertSrcAreEqual """
  type Record = { Field1: int; Field2: int }
  let x = { Field1 = failwith ""
            Field2 = failwith "" } : Record"""
  
  [<Test>]
  let ``multiple-field typed record stub generation (3)`` () =
      """
  type Record = { Field1: int; Field2: int }
  let x = { Field1 = 0; Field2 = 0 }
  let y = { x with } : Record"""
      |> insertStubFromPos (Pos.fromZ 3 21)
      |> assertSrcAreEqual """
  type Record = { Field1: int; Field2: int }
  let x = { Field1 = 0; Field2 = 0 }
  let y = { x with Field1 = failwith ""
                   Field2 = failwith "" } : Record"""
  
  [<Test>]
  let ``single-field record stub generation in the middle of the file`` () =
  