flutter-examples/push_notifications/lib/main.dart

import 'package:flutter/material.dart';

import 'example.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Push Notification demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const Example(),
    );
  }
}