anchor.diff:    factory CompletionMetricsOptions(results) {
       return CompletionMetricsOptions._(
           availableSuggestions: results[AVAILABLE_SUGGESTIONS],
  -        markdown: results[MD],
           overlay: results[OVERLAY],
           printMissedCompletionDetails: results[PRINT_MISSED_COMPLETION_DETAILS],
           printMissedCompletionSummary: results[PRINT_MISSED_COMPLETION_SUMMARY],
  
positive.code:             'completion will match the support in the Dart Plugin for '
              'IntelliJ, without this enabled the completion support matches the '
              'support in LSP.',
          defaultsTo: false,
          negatable: false)
      ..addFlag(CompletionMetricsOptions.MD,
          help: 'Use markdown as the output format.',
          defaultsTo: false,
          negatable: false)
      ..addOption(
  
negative.code:   /// run.
    final bool availableSuggestions;
  
    /// The overlay mode that should be used.
    final String overlay;
  
  