如何监听WkWebkiew何时完成页面加载？

import WebKit

class ViewController: UIViewController, WKNavigationDelegate {
    var webView: WKWebView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let configuration = WKWebViewConfiguration()
        webView = WKWebView(frame: view.bounds, configuration: configuration)
        webView.navigationDelegate = self
        view.addSubview(webView)
        
        // 加载网页
        let url = URL(string: "https://www.example.com")
        let request = URLRequest(url: url!)
        webView.load(request)
    }
    
    // 页面加载完成时调用
    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
        print("页面加载完成")
        // 在这里可以执行你想要的操作
    }
}