anchor.diff:    });
   }
   
  +/// Tests marked with this annotations fail because we either have not triaged
  +/// them, or know that this is an analyzer problem.
  +const potentialAnalyzerProblem = const Object();
  +
   /// Tests marked with this annotation fail because of a Fasta problem.
   class FastaProblem {
     const FastaProblem(String issueUri);
  
positive.code: 
    @override
    @failingTest
    test_unqualifiedReferenceToNonLocalStaticMember_fromComment_new() async {
      return super
          .test_unqualifiedReferenceToNonLocalStaticMember_fromComment_new();
  
negative.code: 
    @override
    @failingTest
    @FastaProblem('https://github.com/dart-lang/sdk/issues/30812')
    test_constWithUndefinedConstructor() async {
      return super.test_constWithUndefinedConstructor();
    }
  
    @override
    @failingTest
    @potentialAnalyzerProblem
    test_duplicateDefinition_emptyName() async {
      return super.test_duplicateDefinition_emptyName();
    }
  