anchor.diff:            return instanceMemberSlowestResults;
           case CompletionGroup.staticMember:
             return staticMemberSlowestResults;
  +        case CompletionGroup.typeReference:
  +          return typeRefSlowestResults;
           case CompletionGroup.topLevel:
             return topLevelSlowestResults;
         }
  
positive.code:   MeanReciprocalRankComputer staticMemberMrrComputer =
        MeanReciprocalRankComputer('static member completions');
  
    MeanReciprocalRankComputer topLevelMrrComputer =
        MeanReciprocalRankComputer('non-type member completions');
  
  
negative.code:         } else {
            return CompletionGroup.instanceMember;
          }
        } else if (expectedCompletion.elementKind == ElementKind.CLASS) {
          return CompletionGroup.typeReference;
        }
      }
      return CompletionGroup.topLevel;
  