extension MapViewController: DJISDKManagerDelegate {

    func appRegisteredWithError(_ error: Error?) {
        if let error = error {
            print(error.localizedDescription)
        } else {
            DJISDKManager.startConnectionToProduct()
        }
    }

    func productConnected(_ product: DJIBaseProduct?) {
        if let _ = product {
            if DJISDKManager.product()!.isKind(of: DJIAircraft.self) {
                let flightController = (DJISDKManager.product()! as! DJIAircraft).flightController!
                flightController.delegate = self
            }
        }
    }
}