anchor.diff:  
               // Implement the service related to temporary paths and file time stamps
               member fs.GetTempPathShim () = 
  -                tprintfn "GetTempPathShim: ()"
  +                tprintfn "GetTempPathShim: ()" ()
                   defaultFileSystem.GetTempPathShim ()
   
               member fs.GetLastWriteTimeShim name = 
  
positive.code: module Helpers =
      let inline ni () = raise (new System.NotImplementedException ())
  
  type internal MetadataReference =
  | FileMetadataReference of string
  | ImageMetadataReference of string * byte array
  
negative.code:         let l = new obj ()
          lock l fn
  
      let tprintf fmt = ignore fmt // Printf.ksprintf System.Diagnostics.Trace.Write fmt
      let tprintfn fmt = ignore fmt //Printf.ksprintf System.Diagnostics.Trace.WriteLine fmt
  
      let getReferences (project: Project) targetFramework incomingReferences =
          let name = project.Name
  