如何检测MKMapview的注解上的按钮按下？

override func viewDidLoad() {
    super.viewDidLoad()
    mapView.delegate = self
}

func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
    // 判断annotation是否为自定义的标注类，如果是则创建对应的标注视图
    if annotation is CustomAnnotation {
        let identifier = "CustomAnnotation"
        var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: identifier)
        if annotationView == nil {
            annotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: identifier)
            annotationView?.canShowCallout = true
            // 在标注视图上添加按钮
            let button = UIButton(type: .detailDisclosure)
            annotationView?.rightCalloutAccessoryView = button
        } else {
            annotationView?.annotation = annotation
        }
        return annotationView
    }
    return nil
}

func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
    // 判断点击的按钮是否为标注视图上的按钮
    if control == view.rightCalloutAccessoryView {
        // 执行按钮点击后的操作
        if let annotation = view.annotation as? CustomAnnotation {
            // 获取标注的相关信息
            let title = annotation.title
            let subtitle = annotation.subtitle
            // 处理按钮点击事件
            // ...
        }
    }
}