anchor.diff:    List<CompletionResult> staticMemberWorstResults = [];
   
     /// A list of the top [maxWorstResults] completion results with the highest
  +  /// (worst) ranks for completing to type references.
  +  List<CompletionResult> typeRefWorstResults = [];
  +
  +  /// A list of the top [maxWorstResults] completion results with the highest
     /// (worst) ranks for completing to top-level declarations.
     List<CompletionResult> topLevelWorstResults = [];
   
  
positive.code:     print('');
  
      metrics.staticMemberMrrComputer.printMean();
      print('');
  
      metrics.topLevelMrrComputer.printMean();
  
negative.code: 
  /// An indication of the group in which the completion falls for the purposes of
  /// subdividing the results.
  enum CompletionGroup { instanceMember, staticMember, typeReference, topLevel }
  
  /// A wrapper for the collection of [Counter] and [MeanReciprocalRankComputer]
  /// objects for a run of [CompletionMetricsComputer].
  