anchor.diff:  // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
   // for details. All rights reserved. Use of this source code is governed by a
   // BSD-style license that can be found in the LICENSE file.
  +
  +import 'dart:html';
   
   import 'package:angular/angular.dart';
   import 'package:angular_components/content/deferred_content.dart';
  
positive.code:   /// These CSS classes will be copied into the popup overlay. The classes can
    /// be used to select DOM elements within the overlay when the popup is open.
    @Input()
    String popupClass;
  
    @ViewChild(MenuItemGroupsComponent)
    set menuItemGroups(MenuItemGroupsComponent groups) {
  
negative.code:     styleUrls: ['menu_popup.scss.css'],
      changeDetection: ChangeDetectionStrategy.OnPush)
  class MenuPopupComponent extends Object with FocusableMixin, MenuPopupWrapper {
    HtmlElement element;
  
    @Input()
    PopupSource popupSource;
  
  