anchor.diff:  import 'package:angular_components/content/deferred_content_aware.dart';
   import 'package:angular_components/focus/focus.dart';
   import 'package:angular_components/laminate/enums/alignment.dart';
  -import 'package:angular_components/laminate/popup/popup.dart' show PopupSource;
  +import 'package:angular_components/laminate/popup/popup.dart'
  +    show PopupSource, ElementPopupSource;
   import 'package:angular_components/material_popup/material_popup.dart';
   import 'package:angular_components/material_tooltip/module.dart';
   import 'package:angular_components/utils/angular/css/css.dart';
  
positive.code: 
    void onMouseLeave() {
      _tooltipController.deactivate(this);
    }
  
    // Proxy control of this tooltip via the tooltip controller.
  
negative.code:                 [autoDismiss]="focusContents"
                  [class]="popupClassName"
                  [source]="popupSource"
                  (autoDismissed)="onClose()"
                  role="tooltip">
    <div class="paper-container"
         tabindex="-1"
         [attr.aria-label]="title"
         [autoFocus]="focusContents"
         (mouseover)="onMouseOver()"
         (mouseleave)="onMouseLeave()">
  