public void InitiateAuthMarshallTest()
        {
            var request = InstantiateClassGenerator.Execute<InitiateAuthRequest>();
            var marshaller = new InitiateAuthRequestMarshaller();

            var internalRequest = marshaller.Marshall(request);
            var jsonRequest = UTF8Encoding.UTF8.GetString(internalRequest.Content);                        
            Comparer.CompareObjectToJson<InitiateAuthRequest>(request,jsonRequest);

            var webResponse = new WebResponseData
            {
                Headers = {
                    {"x-amzn-RequestId", Guid.NewGuid().ToString()},
                    {"x-amz-crc32","0"}
                }
            };
            var jsonResponse = new JsonSampleGenerator(service_model, service_model.FindOperation("InitiateAuth").ResponseStructure).Execute();
            webResponse.Headers.Add("Content-Length", UTF8Encoding.UTF8.GetBytes(jsonResponse).Length.ToString());
            UnmarshallerContext context = new JsonUnmarshallerContext(Utils.CreateStreamFromString(jsonResponse), false, webResponse);
            var response = InitiateAuthResponseUnmarshaller.Instance.Unmarshall(context)
                as InitiateAuthResponse;
            InstantiateClassGenerator.ValidateObjectFullyInstantiated(response);
        }
        /// <summary>
        /// Initiates the authentication flow.
        /// </summary>
        /// <param name="request">Container for the necessary parameters to execute the InitiateAuth service method.</param>
        /// 
        /// <returns>The response from the InitiateAuth service method, as returned by CognitoIdentityProvider.</returns>
        /// <exception cref="Amazon.CognitoIdentityProvider.Model.InternalErrorException">
        /// This exception is thrown when Amazon Cognito encounters an internal error.
        /// </exception>
        /// <exception cref="Amazon.CognitoIdentityProvider.Model.InvalidLambdaResponseException">
        /// This exception is thrown when the Amazon Cognito service encounters an invalid AWS
        /// Lambda response.
        /// </exception>
        /// <exception cref="Amazon.CognitoIdentityProvider.Model.InvalidParameterException">
        /// This exception is thrown when the Amazon Cognito service encounters an invalid parameter.
        /// </exception>
        /// <exception cref="Amazon.CognitoIdentityProvider.Model.InvalidUserPoolConfigurationException">
        /// This exception is thrown when the user pool configuration is invalid.
        /// </exception>
        /// <exception cref="Amazon.CognitoIdentityProvider.Model.NotAuthorizedException">
        /// This exception gets thrown when a user is not authorized.
        /// </exception>
        /// <exception cref="Amazon.CognitoIdentityProvider.Model.PasswordResetRequiredException">
        /// This exception is thrown when a password reset is required.
        /// </exception>
        /// <exception cref="Amazon.CognitoIdentityProvider.Model.ResourceNotFoundException">
        /// This exception is thrown when the Amazon Cognito service cannot find the requested
        /// resource.
        /// </exception>
        /// <exception cref="Amazon.CognitoIdentityProvider.Model.TooManyRequestsException">
        /// This exception gets thrown when the user has made too many requests for a given operation.
        /// </exception>
        /// <exception cref="Amazon.CognitoIdentityProvider.Model.UnexpectedLambdaException">
        /// This exception gets thrown when the Amazon Cognito service encounters an unexpected
        /// exception with the AWS Lambda service.
        /// </exception>
        /// <exception cref="Amazon.CognitoIdentityProvider.Model.UserLambdaValidationException">
        /// This exception gets thrown when the Amazon Cognito service encounters a user validation
        /// exception with the AWS Lambda service.
        /// </exception>
        /// <exception cref="Amazon.CognitoIdentityProvider.Model.UserNotConfirmedException">
        /// This exception is thrown when a user is not confirmed successfully.
        /// </exception>
        /// <exception cref="Amazon.CognitoIdentityProvider.Model.UserNotFoundException">
        /// This exception is thrown when a user is not found.
        /// </exception>
        public InitiateAuthResponse InitiateAuth(InitiateAuthRequest request)
        {
            var marshaller = new InitiateAuthRequestMarshaller();
            var unmarshaller = InitiateAuthResponseUnmarshaller.Instance;

            return Invoke<InitiateAuthRequest,InitiateAuthResponse>(request, marshaller, unmarshaller);
        }
        /// <summary>
        /// Initiates the asynchronous execution of the InitiateAuth operation.
        /// </summary>
        /// 
        /// <param name="request">Container for the necessary parameters to execute the InitiateAuth 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<InitiateAuthResponse> InitiateAuthAsync(InitiateAuthRequest request, System.Threading.CancellationToken cancellationToken = default(CancellationToken))
        {
            var marshaller = new InitiateAuthRequestMarshaller();
            var unmarshaller = InitiateAuthResponseUnmarshaller.Instance;

            return InvokeAsync<InitiateAuthRequest,InitiateAuthResponse>(request, marshaller, 
                unmarshaller, cancellationToken);
        }
        /// <summary>
        /// Initiates the asynchronous execution of the InitiateAuth operation.
        /// </summary>
        /// 
        /// <param name="request">Container for the necessary parameters to execute the InitiateAuth operation on AmazonCognitoIdentityProviderClient.</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 EndInitiateAuth
        ///         operation.</returns>
        public IAsyncResult BeginInitiateAuth(InitiateAuthRequest request, AsyncCallback callback, object state)
        {
            var marshaller = new InitiateAuthRequestMarshaller();
            var unmarshaller = InitiateAuthResponseUnmarshaller.Instance;

            return BeginInvoke<InitiateAuthRequest>(request, marshaller, unmarshaller,
                callback, state);
        }