有没有办法将CLRegion设置为在特定时间内未到达时过期？

import CoreLocation
import UserNotifications

class MyLocationManager: NSObject, CLLocationManagerDelegate {
    let locationManager = CLLocationManager()
    
    override init() {
        super.init()
        locationManager.delegate = self
    }
    
    func startMonitoringRegion() {
        let region = CLCircularRegion(center: CLLocationCoordinate2D(latitude: 37.3317, longitude: -122.0307), radius: 100, identifier: "MyRegion")
        locationManager.startMonitoring(for: region)
    }
    
    func locationManager(_ manager: CLLocationManager, didEnterRegion region: CLRegion) {
        // 设备进入区域
    }
    
    func locationManager(_ manager: CLLocationManager, didExitRegion region: CLRegion) {
        // 设备离开区域
    }
    
    func checkExpiration() {
        let currentTime = Date()
        let expirationTime = // 设置特定时间
        
        if currentTime > expirationTime {
            // 发送本地通知提醒用户
            let content = UNMutableNotificationContent()
            content.title = "区域到期提醒"
            content.body = "您还未到达指定区域"
            let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 1, repeats: false)
            let request = UNNotificationRequest(identifier: "RegionExpiration", content: content, trigger: trigger)
            UNUserNotificationCenter.current().add(request, withCompletionHandler: nil)
        }
    }
}