在Flutter中，我可以将FutureBuilder<String>放在计时器中吗？

import 'package:flutter/material.dart';

class MyWidget extends StatefulWidget {
  @override
  _MyWidgetState createState() => _MyWidgetState();
}

class _MyWidgetState extends State<MyWidget> {
  Future<String> fetchData() async {
    // 异步操作，例如从服务器获取数据
    await Future.delayed(Duration(seconds: 2));
    return 'Hello World';
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('FutureBuilder Example'),
      ),
      body: Center(
        child: TimerBuilder(
          duration: Duration(seconds: 5),
          builder: (BuildContext context) {
            return FutureBuilder<String>(
              future: fetchData(),
              builder: (BuildContext context, AsyncSnapshot<String> snapshot) {
                if (snapshot.connectionState == ConnectionState.waiting) {
                  return CircularProgressIndicator();
                } else if (snapshot.hasError) {
                  return Text('Error: ${snapshot.error}');
                } else {
                  return Text('Data: ${snapshot.data}');
                }
              },
            );
          },
        ),
      ),
    );
  }
}

class TimerBuilder extends StatefulWidget {
  final Duration duration;
  final Widget Function(BuildContext) builder;

  TimerBuilder({required this.duration, required this.builder});

  @override
  _TimerBuilderState createState() => _TimerBuilderState();
}

class _TimerBuilderState extends State<TimerBuilder> {
  late Timer _timer;

  @override
  void initState() {
    super.initState();
    _timer = Timer.periodic(widget.duration, (Timer timer) {
      setState(() {});
    });
  }

  @override
  void dispose() {
    _timer.cancel();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return widget.builder(context);
  }
}