anchor.diff:            match tryFindFile mstestPaths mstestexe with
             | Some path -> path
             | None -> ""
  -      ErrorLevel = ErrorLevel.Error }
  +      ErrorLevel = ErrorLevel.Error
  +      Isolate = false }
   
   /// Builds the command line arguments from the given parameter record and the given assemblies.
   /// [omit]
  
positive.code:       /// Path to MSTest.exe 
        ToolPath : string
        /// Option which allow to specify if a MSTest error should break the build.
        ErrorLevel : ErrorLevel }
  
  /// MSTest default parameters.
  let MSTestDefaults = 
  
negative.code:     |> appendIfNotNull assembly "/testcontainer:"
      |> appendIfNotNull parameters.Category "/category:"
      |> appendIfNotNull testResultsFile "/resultsfile:"
      |> appendIfFalse parameters.Isolate "/noisolation"
      |> toText
  
  /// Runs MSTest command line tool on a group of assemblies.
  