/// <summary>
        /// Initiates the asynchronous execution of the GetClientCertificate operation.
        /// </summary>
        /// 
        /// <param name="request">Container for the necessary parameters to execute the GetClientCertificate operation.</param>
        /// <param name="cancellationToken">
        ///     A cancellation token that can be used by other objects or threads to receive notice of cancellation.
        /// </param>
        /// <returns>The task object representing the asynchronous operation.</returns>
        public Task<GetClientCertificateResponse> GetClientCertificateAsync(GetClientCertificateRequest request, System.Threading.CancellationToken cancellationToken = default(CancellationToken))
        {
            var marshaller = new GetClientCertificateRequestMarshaller();
            var unmarshaller = GetClientCertificateResponseUnmarshaller.Instance;

            return InvokeAsync<GetClientCertificateRequest,GetClientCertificateResponse>(request, marshaller, 
                unmarshaller, cancellationToken);
        }
        /// <summary>
        /// Initiates the asynchronous execution of the GetClientCertificate operation.
        /// </summary>
        /// 
        /// <param name="request">Container for the necessary parameters to execute the GetClientCertificate operation on AmazonAPIGatewayClient.</param>
        /// <param name="callback">An AsyncCallback delegate that is invoked when the operation completes.</param>
        /// <param name="state">A user-defined state object that is passed to the callback procedure. Retrieve this object from within the callback
        ///          procedure using the AsyncState property.</param>
        /// 
        /// <returns>An IAsyncResult that can be used to poll or wait for results, or both; this value is also needed when invoking EndGetClientCertificate
        ///         operation.</returns>
        public IAsyncResult BeginGetClientCertificate(GetClientCertificateRequest request, AsyncCallback callback, object state)
        {
            var marshaller = new GetClientCertificateRequestMarshaller();
            var unmarshaller = GetClientCertificateResponseUnmarshaller.Instance;

            return BeginInvoke<GetClientCertificateRequest>(request, marshaller, unmarshaller,
                callback, state);
        }
        internal GetClientCertificateResponse GetClientCertificate(GetClientCertificateRequest request)
        {
            var marshaller = new GetClientCertificateRequestMarshaller();
            var unmarshaller = GetClientCertificateResponseUnmarshaller.Instance;

            return Invoke<GetClientCertificateRequest,GetClientCertificateResponse>(request, marshaller, unmarshaller);
        }
        public void GetClientCertificateMarshallTest()
        {
            var operation = service_model.FindOperation("GetClientCertificate");

            var request = InstantiateClassGenerator.Execute<GetClientCertificateRequest>();
            var marshaller = new GetClientCertificateRequestMarshaller();

            var internalRequest = marshaller.Marshall(request);
            RequestValidator.Validate("GetClientCertificate", request, internalRequest, service_model);            

            var webResponse = new WebResponseData
            {
                Headers = {
                    {"x-amzn-RequestId", Guid.NewGuid().ToString()},
                    {"x-amz-crc32","0"}
                }
            };

            var payloadResponse = new JsonSampleGenerator(service_model, operation.ResponseStructure).Execute();
            webResponse.Headers.Add("Content-Length", UTF8Encoding.UTF8.GetBytes(payloadResponse).Length.ToString());
            var context = new JsonUnmarshallerContext(Utils.CreateStreamFromString(payloadResponse), false, webResponse);
            ResponseUnmarshaller unmarshaller = GetClientCertificateResponseUnmarshaller.Instance;
            var response = unmarshaller.Unmarshall(context)
                as GetClientCertificateResponse;   
            InstantiateClassGenerator.ValidateObjectFullyInstantiated(response);               
        }