anchor.diff:     */
     @published String animation = '';
   
  -  static final List<String> SUPPORTED_ANIMATIONS = [
  +  static final List<String> _SUPPORTED_ANIMATIONS = [
       'fade', 'shake', 'scale-slideup'
     ];
   
  
positive.code:    * method to adjust the size and position of the overlay when the
     * browser window resizes.
     */
    void resizeHandler(e) {
    }
  }
  
negative.code:         e..stopPropagation()..preventDefault();
        }
        if (autoClose) {
          _autoCloseTask = new Timer(Duration.ZERO, () { opened = false; });
        }
      }
    }
  
    bool _isPointInOverlay(Point xyGlobal) {
      return super.getBoundingClientRect().containsPoint(xyGlobal);
    }
  
    void _keyDownHandler(KeyboardEvent e) {
      if (e.keyCode == KeyCode.ESC) {
        opened = false;
      }
  