anchor.diff:    PatternValidator
   ];
   
  -const List<Type> formDirectives = FORM_DIRECTIVES;
  +@Deprecated('Please use formDirectives')
  +const List<Type> FORM_DIRECTIVES = formDirectives;
  
positive.code: /// ```dart
  /// @Component(
  ///   selector: 'my-app',
  ///   directives: const [FORM_DIRECTIVES]
  /// )
  /// class MyApp {}
  /// ```
  const List<Type> FORM_DIRECTIVES = const [
    NgControlName,
    NgControlGroup,
    NgFormControl,
  
negative.code:         MaxLengthValidator,
          PatternValidator;
  
  /// A list of all the form directives used as part of a `@Component` annotation.
  ///
  ///  This is a shorthand for importing them each individually.
  