anchor.diff:    static final Property<bool> _isDraggableProperty =
         new Property<bool>("isDraggable", false);
   
  +  static final Property<String> _cursorProperty =
  +      new Property<String>("_cursor");
  +
     static final AttachedEvent<ThingMouseEventArgs> _clickEvent =
         new AttachedEvent<ThingMouseEventArgs>('clickEvent');
   
  
positive.code:       _draggingThing = null;
      }
    }
  }
  
negative.code:   static final AttachedEvent _mouseOutEvent =
        new AttachedEvent('mouseOut');
  
    static final AttachedEvent<Vector> _dragEvent =
        new AttachedEvent<Vector>('drag');
  
    final Stage _stage;
  
  