anchor.diff:  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;
  +import 'package:react_bootstrap/react_bootstrap.dart' as bs;
   
   main() {
     reactClient.setClientConfiguration();
  
positive.code:     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'})),
      ]))),
  
      div({"style": {"padding": "10px"}}, [
        react_bootstrap.Button(
            {}, react_bootstrap.Glyphicon({'glyph': 'star', }, 'Star')),
      ]),
  
  
  
    ]);
  }
  
negative.code: //    };
  //  }
  
  
    void handleSelect(selectedKey, [b, c]) {
      window.alert('selected ' + selectedKey);
    }
  
    render() => div({}, [
      h1({"style": {"color": "red"}}, [ "DEMO"]),
  
  
      div({
        "style": {"padding": "10px"}
      }, [bs.Alert({'bsStyle': 'warning', }, div({}, "HELLO!")), ]),
      div({
        "style": {"padding": "10px"}
      }, [bs.Button({'bsStyle': 'primary', }, 'Primary')]),
  
  
  /*
  