anchor.diff:  }
   
   class _MyAppState extends State<MyApp> {
  -  String _platformVersion = 'Unknown';
  +  MediaStream _localStream;
  +  String _version = "0.0.1";
   
     @override
     initState() {
  
positive.code:       return;
  
      setState(() {
        _platformVersion = platformVersion;
      });
    }
  
  
negative.code:           title: new Text('Plugin example app'),
          ),
          body: new Center(
            child: new Text('Running on: $_version\n'),
          ),
        ),
      );
  