// Copyright 2014 The Flutter Authors. All rights reserved.// Use of this source code is governed by a BSD-style license that can be// found in the LICENSE file.// @dart=2.9import'package:flutter/material.dart';String?unused;voidmain(){runApp(MyApp());}classMyAppextendsStatelessWidget{@overrideWidgetbuild(BuildContextcontext){returnMaterialApp(title:'Flutter Demo',theme:ThemeData(primarySwatch:Colors.blue,visualDensity:VisualDensity.adaptivePlatformDensity,),home:constCenter(child:Text('hello, world')));}}