anchor.diff:    }
   
     test_class_field_static_late() async {
  -    featureSet = FeatureSet.forTesting(
  -        sdkVersion: '2.2.2', additionalFeatures: [Feature.non_nullable]);
  +    featureSet = enableNnbd;
       var library = await checkLibrary('class C { static late int i; }');
       checkElementText(library, r'''
   class C {
  
positive.code:   }
  
    test_class_field_const_late() async {
      featureSet = FeatureSet.forTesting(
          sdkVersion: '2.2.2', additionalFeatures: [Feature.non_nullable]);
      var library =
          await checkLibrary('class C { static late const int i = 0; }');
      checkElementText(library, r'''
  
negative.code: /// applied to a class implementing [ResynthesizeTestStrategy], along with the
  /// mixin [ResynthesizeTestHelpers].
  mixin ResynthesizeTestCases implements ResynthesizeTestHelpers {
    FeatureSet get enableNnbd =>
        FeatureSet.forTesting(additionalFeatures: [Feature.non_nullable]);
  
    test_class_abstract() async {
      var library = await checkLibrary('abstract class C {}');
      checkElementText(library, r'''
  