如何在Flutter中的AppBar中添加TabBar？

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Flutter App'),
        bottom: TabBar(
          tabs: [
            Tab(text: 'Tab 1'),
            Tab(text: 'Tab 2'),
            Tab(text: 'Tab 3'),
          ],
        ),
      ),
      body: TabBarView(
        children: [
          Center(child: Text('Tab 1 Content')),
          Center(child: Text('Tab 2 Content')),
          Center(child: Text('Tab 3 Content')),
        ],
      ),
    );
  }
}