private static void unfreezeDevice(IoTDAClient client)
        {
            UnfreezeDeviceRequest req = new UnfreezeDeviceRequest
            {
                DeviceId   = "5e25d39a3b7c24fa3638804b_1211211",
                InstanceId = "1a7ffc5c-d89c-44dd-8265-b1653d951ce0"
            };

            try
            {
                var resp = client.UnfreezeDevice(req);
                Console.WriteLine(resp);
            }
            catch (RequestTimeoutException requestTimeoutException)
            {
                Console.WriteLine(requestTimeoutException.ErrorMessage);
            }
            catch (ServiceResponseException clientRequestException)
            {
                Console.WriteLine(clientRequestException.HttpStatusCode);
                Console.WriteLine(clientRequestException.ErrorCode);
                Console.WriteLine(clientRequestException.ErrorMsg);
            }
            catch (ConnectionException connectionException)
            {
                Console.WriteLine(connectionException.ErrorMessage);
            }
        }