anchor.diff:              '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(
  
positive.code:   /// computing suggestions.
    static const String AVAILABLE_SUGGESTIONS = 'available-suggestions';
  
    /// A flag that causes the output to be in markdown format.
    static const String MD = 'md';
  
    /// An option to control whether and how overlays should be produced.
    static const String OVERLAY = 'overlay';
  
  
negative.code:   }
  
    void printHeading(int level, String heading) {
      var prefix = '#' * level;
      print('$prefix $heading');
      print('');
    }
  
  