flutter WebViewController如何添加标题

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

class MyWebView extends StatefulWidget {
  @override
  _MyWebViewState createState() => _MyWebViewState();
}

class _MyWebViewState extends State<MyWebView> {
  WebViewController _webViewController;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('WebView Title'), // 设置标题
      ),
      body: WebView(
        initialUrl: 'https://example.com',
        onWebViewCreated: (WebViewController controller) {
          _webViewController = controller;
        },
      ),
    );
  }
}