如何在flutter中多次推送和弹出一个页面？

import 'package:flutter/material.dart';

class MyPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('My Page'),
      ),
      body: Center(
        child: Text('This is my page.'),
      ),
    );
  }
}

import 'package:flutter/material.dart';
import 'my_page.dart';

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

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Home'),
      ),
      body: Center(
        child: ElevatedButton(
          child: Text('Push Page'),
          onPressed: () {
            Navigator.push(
              context,
              MaterialPageRoute(builder: (context) => MyPage()),
            );
          },
        ),
      ),
    );
  }
}