anchor.diff:      show SimpleChange;
   
   /// Lifecycle hooks are guaranteed to be called in the following order:
  -/// - `onChanges` (if any bindings have changed),
  +/// - `onChanges` (if any bindings have been changed by the Angular framework),
   /// - `onInit` (after the first check only),
   /// - `doCheck`,
   /// - `afterContentInit`,
  
positive.code: }
  
  /// Implement this interface to get notified when any data-bound property of
  /// your directive changes.
  ///
  /// [ngAfterChanges] is called right after the data-bound properties have been
  /// checked and before view and content children are checked if at least one of
  
negative.code: }
  
  /// Implement this interface to get notified when any data-bound property of
  /// your directive is changed by the Angular framework.
  ///
  /// [ngOnChanges] is called right after the data-bound properties have been
  /// checked and before view and content children are checked if at least one of
  