anchor.diff:  const bool debug = false; // set to true to dump the DOM for debugging purposes
   
   class StocksApp extends App {
  -  DrawerController _drawerController = new DrawerController();
  -  PopupMenuController _menuController;
   
     static final Style _actionBarStyle = new Style('''
       background-color: ${Purple[500]};''');
  
positive.code:       _searchQuery = query;
      });
    }
  
    void _handleMenuShow(_) {
      setState(() {
  
negative.code:         data.appendTo(_stocks);
        });
      });
      _drawerController = new DrawerController(_handleDrawerStatusChanged);
    }
  
    bool _isSearching = false;
    String _searchQuery;
  
    void _handleSearchBegin(_) {
      setState(() {
  