Correct way to retrieve token for FCM - iOS 10 Swift 3

Question

i had implement Firebase with FirebaseAuth/FCM etc and did sent notification successfully through Firebase Console.

However i would need to push the notification from m

Answer 1

FCM Device Token swift3

    let fcmDeviceToken = FIRInstanceID.instanceID().token()
    print("FCM token: \(fcmDeviceToken ?? "")")