anchor.diff:              let writeImplementation = writeImplementation ctx
               let (_, _, setterArgInfos, _) = preprocess ctx setter
               let writer = ctx.Writer
  -            if verboseMode then writer.WriteLine("")
               writer.Write("member ")
               for modifier in modifiers do
                   writer.Write("{0} ", modifier)
  
positive.code:     /// Generate stub implementation of an interface at a start column
      let formatInterface startColumn indentation (typeInstances: string []) objectIdent
              (methodBody: string) (displayContext: FSharpDisplayContext) excludedMemberSignatures
              (e: FSharpEntity) withExplicitTypes =
          Debug.Assert(isInterface e, "The entity should be an interface.")
          let lines = methodBody.Replace("\r\n", "\n").Split('\n')
          use writer = new ColumnIndentedTextWriter()
  
negative.code:         else
              writer.Indent startColumn
              writer.WriteLine("")
              let duplicatedMembers =
                  missingMembers
                  |> Seq.countBy(fun (m, insts) -> m.DisplayName, insts |> Seq.length)
                  |> Seq.filter (snd >> (<) 1)
                  |> Seq.map (fst >> fst)
                  |> Set
  
              let getReturnType v = snd (getArgTypes ctx v)
              let rec loop (members : (FSharpMemberOrFunctionOrValue * _) list) =
  