anchor.diff:        FailOnError = FxCopErrorLevel.DontFailBuild
         TimeOut = TimeSpan.FromMinutes 5.
         ToolPath = ProgramFilesX86 @@ @"Microsoft Visual Studio 10.0\Team Tools\Static Analysis Tools\FxCop\FxCopCmd.exe"
  -      ForceOutput = false }
  +      ForceOutput = false
  +      CustomDictionary = String.Empty }
   
   /// Run FxCop on a group of assemblies.
   let FxCop setParams (assemblies : string seq) = 
  
positive.code:       FailOnError : FxCopErrorLevel
        TimeOut : TimeSpan
        ToolPath : string
        ForceOutput : bool }
  
  /// This checks the result file with some XML queries for errors
  /// [omit]
  
negative.code:         append param.SaveResultsInProjectFile "/u "
          append param.Verbose "/v "
          append param.UseGACSwitch "/gac "
          appendFormat "/dic:\"{0}\" " param.CustomDictionary
          (!args).ToString()
      
      tracefn "FxCop command\n%s %s" param.ToolPath commandLineCommands
  