private static void getDeviceShadow(IoTDAClient client)
        {
            ShowDeviceShadowRequest req = new ShowDeviceShadowRequest
            {
                DeviceId = "5e25d39a3b7c24fa3638804b_nb_0403_1"
            };

            try
            {
                var resp = client.ShowDeviceShadow(req);
                Console.WriteLine(resp.HttpStatusCode);
                Console.WriteLine(resp.DeviceId);
                foreach (var DeviceShadowData in resp.Shadow)
                {
                    Console.WriteLine(JsonConvert.SerializeObject(DeviceShadowData));
                }
            }
            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);
            }
        }