如何在Swift的另一个生命周期中应用scalePagesToFit？

import UIKit
import WebKit

class ViewController: UIViewController, WKNavigationDelegate {
    var webView: WKWebView!

    override func viewDidLoad() {
        super.viewDidLoad()

        let webConfiguration = WKWebViewConfiguration()
        webView = WKWebView(frame: .zero, configuration: webConfiguration)
        webView.navigationDelegate = self
        webView.scalePagesToFit = true // 在初始化过程中应用scalePagesToFit

        view = webView

        let myURL = URL(string: "https://www.example.com")
        let myRequest = URLRequest(url: myURL!)
        webView.load(myRequest)
    }
}