code: @Override
      @Deprecated
      public InvokeAsyncResult invokeAsync(InvokeAsyncRequest request) {
          request = beforeClientExecution(request);
          return executeInvokeAsync(request);
      }
docs: <important>
  <p>
  For asynchronous function invocation, use <a>Invoke</a>.
  </p>
  </important>
  <p>
  Invokes a function asynchronously.
  </p>
  
  @param invokeAsyncRequest
  @return Result of the InvokeAsync operation returned by the service.
  @throws ServiceException
  The AWS Lambda service encountered an internal error.
  @throws ResourceNotFoundException
  The resource (for example, a Lambda function or access policy statement) 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.
  @sample AWSLambda.InvokeAsync
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/lambda-2015-03-31/InvokeAsync" target="_top">AWS API
  Documentation</a>