如何在我的AppDelegate.swift中使用Workmanager注册一个“特定插件”？

import UIKit
import Flutter
import Workmanager

@UIApplicationMain
class AppDelegate: FlutterAppDelegate {
    override func application(
        _ application: UIApplication,
        didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
    ) -> Bool {
        let flutterViewController: FlutterViewController = window?.rootViewController as! FlutterViewController
        
        // 注册特定插件
        WorkmanagerPlugin.register(with: flutterViewController)
        
        GeneratedPluginRegistrant.register(with: self)
        return super.application(application, didFinishLaunchingWithOptions: launchOptions)
    }
}