@SdkInternalApi
    final InvokeAsyncResult executeInvokeAsync(InvokeAsyncRequest invokeAsyncRequest) {

        ExecutionContext executionContext = createExecutionContext(invokeAsyncRequest);
        AWSRequestMetrics awsRequestMetrics = executionContext.getAwsRequestMetrics();
        awsRequestMetrics.startEvent(Field.ClientExecuteTime);
        Request<InvokeAsyncRequest> request = null;
        Response<InvokeAsyncResult> response = null;

        try {
            awsRequestMetrics.startEvent(Field.RequestMarshallTime);
            try {
                request = new InvokeAsyncRequestProtocolMarshaller(protocolFactory).marshall(super.beforeMarshalling(invokeAsyncRequest));
                // Binds the request metrics to the current request.
                request.setAWSRequestMetrics(awsRequestMetrics);
                request.addHandlerContext(HandlerContextKey.CLIENT_ENDPOINT, endpoint);
                request.addHandlerContext(HandlerContextKey.ENDPOINT_OVERRIDDEN, isEndpointOverridden());
                request.addHandlerContext(HandlerContextKey.SIGNING_REGION, getSigningRegion());
                request.addHandlerContext(HandlerContextKey.SERVICE_ID, "Lambda");
                request.addHandlerContext(HandlerContextKey.OPERATION_NAME, "InvokeAsync");
                request.addHandlerContext(HandlerContextKey.ADVANCED_CONFIG, advancedConfig);

                request.addHandlerContext(HandlerContextKey.HAS_STREAMING_INPUT, Boolean.TRUE);

            } finally {
                awsRequestMetrics.endEvent(Field.RequestMarshallTime);
            }

            HttpResponseHandler<AmazonWebServiceResponse<InvokeAsyncResult>> responseHandler = protocolFactory.createResponseHandler(
                    new JsonOperationMetadata().withPayloadJson(true).withHasStreamingSuccessResponse(false), new InvokeAsyncResultJsonUnmarshaller());
            response = invoke(request, responseHandler, executionContext);

            return response.getAwsResponse();

        } finally {

            endClientExecution(awsRequestMetrics, request, response);
        }
    }
<important>
<p>
For asynchronous function invocation, use <a>Invoke</a>.
</p>
</important>
<p>
Invokes a function asynchronously.
</p>
<note>
<p>
If you do use the InvokeAsync action, note that it doesn't support the use of X-Ray active tracing. Trace ID is
not propagated to the function, even if X-Ray active tracing is turned on.
</p>
</note>

@param invokeAsyncRequest
@return Result of the InvokeAsync operation returned by the service.
@throws ServiceException
        The Lambda service encountered an internal error.
@throws ResourceNotFoundException
        The resource specified in the request does not exist.
@throws InvalidRequestContentException
        The request body could not be parsed as JSON.
@throws InvalidRuntimeException
        The runtime or runtime version specified is not supported.
@throws ResourceConflictException
        The resource already exists, or another operation is in progress.
@sample AWSLambda.InvokeAsync
@see <a href="http://docs.aws.amazon.com/goto/WebAPI/lambda-2015-03-31/InvokeAsync" target="_top">AWS API
     Documentation</a>
aws-java-sdk-lambda/src/main/java/com/amazonaws/services/lambda/AWSLambdaClient.java