in IoT-Sample/Swift/IoTSampleSwift/AppDelegate.swift [24:32]
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
// Setting up logging to xcode console.
AWSDDLog.sharedInstance.logLevel = .debug
AWSDDLog.add(AWSDDTTYLogger.sharedInstance)
return true
}