private static void getRuleById(IoTDAClient client)
        {
            ShowRuleRequest req = new ShowRuleRequest
            {
                RuleId     = "5ea8ebe75d6efc01e5a022c8",
                InstanceId = "1a7ffc5c-d89c-44dd-8265-b1653d951ce0"
            };

            try
            {
                var resp = client.ShowRule(req);
                Console.WriteLine(resp.HttpStatusCode);
                Console.WriteLine(JsonConvert.SerializeObject(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);
            }
        }