anchor.diff:      new StringBuilder()
       |> appendIfNotNull assembly "/testcontainer:"
       |> appendIfNotNull parameters.Category "/category:"
  +    |> appendIfNotNull parameters.TestMetadataPath "/testmetadata:"
  +    |> appendIfNotNull parameters.TestSettingsPath "/testsettings:"
       |> appendIfNotNull testResultsFile "/resultsfile:"
       |> appendIfTrue parameters.NoIsolation "/noisolation"
       |> toText
  
positive.code:       ResultsDir : string
        /// Path to the Test Metadata file (.vdmdi)  (optional)
        TestMetadataPath : string
        /// Working directory (optional)
        WorkingDir : string
        /// A timeout for the test runner (optional)
  
negative.code:     { Category = null
        ResultsDir = null
        TestMetadataPath = null
        TestSettingsPath = null
        WorkingDir = null
        TimeOut = TimeSpan.FromMinutes 5.
        ToolPath = 
  