anchor.diff:        body: new MainComposer(),
       );
     }
  -}
  -
  -
  -
  -
  -
  -
  -
  -
  +}
positive.code:       theme:new ThemeData(
            primaryColor: Colors.pink
        ),
        home: new MainScafold(),
        routes: <String, WidgetBuilder>{
          "/jsonNetwork":(BuildContext context) => new NetworkApp(),
          "/layout_app":(BuildContext context)=> new LayoutApp(),
  
negative.code:   }
  }
  
  class MainScaffold extends StatelessWidget{
    @override
    Widget build(BuildContext context) {
      return new Scaffold(
  