Notification Service NOTIFICATION SERVICE EXTENSION: SETUP: Requires separate extension target (kind: "notification service" in plan extensions array). Used to modify rich push notification content before display (add images, decrypt payload, etc.). PRINCIPAL CLASS (in extension): class NotificationService: UNNotificationServiceExtension { var contentHandler: ((UNNotificationContent) - Void)? var bestAttemptContent: UNMutableNotificationContent? override func didReceive( request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) - Void) { self.content…