anchor.diff:      Object key,
       UINode toolbar,
       UINode body,
  -    UINode statusbar,
  +    UINode statusBar,
       UINode drawer,
       UINode floatingActionButton
     }) : _toolbar = toolbar,
          _body = body,
  -       _statusbar = statusbar,
  +       _statusBar = statusBar,
          _drawer = drawer,
          _floatingActionButton = floatingActionButton,
          super(key: key);
   
     UINode _toolbar;
     UINode _body;
  -  UINode _statusbar;
  +  UINode _statusBar;
     UINode _drawer;
     UINode _floatingActionButton;
   
  
positive.code:   RenderScaffold({
      RenderBox toolbar,
      RenderBox body,
      RenderBox statusbar,
      RenderBox drawer,
      RenderBox floatingActionButton
    }) {
      this[ScaffoldSlots.toolbar] = toolbar;
      this[ScaffoldSlots.body] = body;
      this[ScaffoldSlots.statusBar] = statusbar;
      this[ScaffoldSlots.drawer] = drawer;
      this[ScaffoldSlots.floatingActionButton] = floatingActionButton;
    }
  
negative.code:       removeChild(_toolbar);
      if (_body != null)
        removeChild(_body);
      if (_statusBar != null)
        removeChild(_statusBar);
      if (_drawer != null)
        removeChild(_drawer);
      if (_floatingActionButton != null)
  