anchor.diff:      // SimpleIdentifier  HideCombinator  ImportDirective
       addSource('/testAB.dart', '''
         library libAB;
  -      part '/partAB.dart';
  +      part "${convertPathForImport('/partAB.dart')}";
         class A { }
         class B { }
         class _AB''');
  
positive.code: class B {}
  ''');
      addTestSource('''
  import "/testB.dart" show ^;
  ''');
      await computeSuggestions();
      assertSuggestClass('A',
  
negative.code:     // SimpleIdentifier  HideCombinator  ImportDirective
      addSource('/testAB.dart', '''
        library libAB;
        part "${convertPathForImport('/partAB.dart')}";
        class A { }
        class B { }''');
      addSource('/partAB.dart', '''
  