anchor.diff:      div({
         "style": {"padding": "10px"}
       },
  -    react_bootstrap.ButtonToolbar({},
  -    react_bootstrap.ButtonGroup({}, [
  -      react_bootstrap.Button({}, react_bootstrap.Glyphicon({'glyph': 'align-left'})),
  -      react_bootstrap.Button({}, react_bootstrap.Glyphicon({'glyph': 'align-center'})),
  -      react_bootstrap.Button({}, react_bootstrap.Glyphicon({'glyph': 'align-right'})),
  -      react_bootstrap.Button({}, react_bootstrap.Glyphicon({'glyph': 'align-justify'})),
  +    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"}}, [
  -      react_bootstrap.Button(
  -          {}, react_bootstrap.Glyphicon({'glyph': 'star', }, 'Star')),
  +      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')
  +      ])]
  +    )
   
     ]);
   }
  
positive.code: //    };
  //  }
  
    render() => div({}, [
      h1({"style": {"color": "red"}}, [ "DEMO"]),
  
  
      div({
        "style": {"padding": "10px"}
      }, [react_bootstrap.Alert({'bsStyle': 'warning', }, div({}, "HELLO!")), ]),
      div({
        "style": {"padding": "10px"}
      }, [react_bootstrap.Button({'bsStyle': 'primary', }, 'Primary')]),
  
  
  /*
  
negative.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 bs;
  
  main() {
    reactClient.setClientConfiguration();
  