anchor.diff:          StringBuilder()
           |> appendIfTrue this.Debug "--debug "
           |> appendIfTrue this.Parallel "--parallel "
  +        |> appendIfTrue this.Summary "--summary "
           |> appendIfTrue (not this.Parallel) "--sequential "
           |> appendIfNotNullOrWhiteSpace this.Filter "--filter "
           |> appendIfNotNullOrWhiteSpace this.FilterTestCase "--filter-test-case "
  
positive.code:       Parallel : bool
        /// Filter a specific hierarchy to run
        Filter : string
        /// Filter a specific test case to run.
        FilterTestCase : string
        /// Filter a specific test list to run.
  
negative.code:             FilterTestList = ""
              Run = []
              ListTests = false
              Summary = true
              WorkingDirectory = ""
          }
  
  