anchor.diff:        content: new Stocklist(stocks: _stocks, query: _searchQuery),
         fab: new FloatingActionButton(
           content: new Icon(type: 'content/add_white', size: 24), level: 3),
  -      drawer: buildDrawer(),
  +      drawer: _drawerShowing ? buildDrawer() : null,
         overlays: overlays
       );
     }
  
positive.code:       _searchQuery = query;
      });
    }
  
    void _handleMenuShow(_) {
      setState(() {
  
negative.code: const bool debug = false; // set to true to dump the DOM for debugging purposes
  
  class StocksApp extends App {
  
    static final Style _actionBarStyle = new Style('''
      background-color: ${Purple[500]};''');
  