anchor.diff:  //    };
   //  }
   
  +
  +  void handleSelect(selectedKey, [b, c]) {
  +    window.alert('selected ' + selectedKey);
  +  }
  +
     render() => div({}, [
       h1({"style": {"color": "red"}}, [ "DEMO"]),
   
   
       div({
         "style": {"padding": "10px"}
  -    }, [react_bootstrap.Alert({'bsStyle': 'warning', }, div({}, "HELLO!")), ]),
  +    }, [bs.Alert({'bsStyle': 'warning', }, div({}, "HELLO!")), ]),
       div({
         "style": {"padding": "10px"}
  -    }, [react_bootstrap.Button({'bsStyle': 'primary', }, 'Primary')]),
  +    }, [bs.Button({'bsStyle': 'primary', }, 'Primary')]),
   
   
   /*
  
positive.code: import 'dart:html';
  import 'package:react/react.dart';
  import 'package:react/react_client.dart' as reactClient;
  import 'package:react_bootstrap/react_bootstrap.dart' as react_bootstrap;
  
  main() {
    reactClient.setClientConfiguration();
  
negative.code:     div({
        "style": {"padding": "10px"}
      },
      bs.ButtonToolbar({},
      bs.ButtonGroup({}, [
        bs.Button({}, bs.Glyphicon({'glyph': 'align-left'})),
        bs.Button({}, bs.Glyphicon({'glyph': 'align-center'})),
        bs.Button({}, bs.Glyphicon({'glyph': 'align-right'})),
        bs.Button({}, bs.Glyphicon({'glyph': 'align-justify'})),
      ]))),
      div({"style": {"padding": "10px"}}, [
        bs.Button(
            {}, bs.Glyphicon({'glyph': 'star', }, 'Star')),
      ]),
  
      bs.Nav({'bsStyle': 'tabs', 'activeKey': 1, 'onSelect': this.handleSelect}, [
        bs.NavItem({'eventKey': '1', 'href': '/home'}, 'NavItem 1 content'),
        bs.NavItem({'eventKey': '2', 'title': 'Item', }, 'NavItem 2 content'),
        bs.NavItem({'eventKey': '3', 'disabled': true}, 'NavItem 3 content'),
        bs.DropdownButton({'eventKey': '4', 'title': 'Dropdown', 'navItem': true, 'onSelect': (a) => this.handleSelect(a, null, null)}, [
          bs.MenuItem({'eventKey': '4.1'}, 'Action'),
          bs.MenuItem({'eventKey': '4.2'}, 'Another action'),
          bs.MenuItem({'eventKey': '4.3'}, 'Something else here'),
          bs.MenuItem({'divider': true}),
          bs.MenuItem({'eventKey': '4.4'}, 'Separated link')
        ])]
      )
  
    ]);
  }
  