didFinishLaunchingWithOptions.swift

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
	
	/* ... */
	
	NotificationCenter.default.addObserver(self,
					       selector: #selector(AppDelegate.applicationDidTimeout(notification:)),
					       name: .appTimeout,
					       object: nil
	)
	
	/* ... */

	return true
}