anchor.diff:    final List<String> styleUrls;
     final List<String> styles;
     final List<Object> directives;
  +
  +  /// Declares generic type arguments for any generic [directives].
  +  ///
  +  /// See [Typed] for details.
  +  final List<Typed> directiveTypes;
  +
     final List<Object> pipes;
     final ViewEncapsulation encapsulation;
   
  
positive.code:         OnDestroy,
          OnInit,
          DoCheck;
  export 'metadata/view.dart';
  export 'metadata/visibility.dart';
  
  
negative.code: import 'package:meta/meta.dart';
  
  import 'change_detection/change_detection.dart';
  import 'metadata/typed.dart';
  import 'metadata/view.dart';
  import 'metadata/visibility.dart';
  
  