public Request<SendMessageRequest> marshall(SendMessageRequest sendMessageRequest) {

    if (sendMessageRequest == null) {
      throw new AmazonClientException("Invalid argument passed to marshall(...)");
    }

    Request<SendMessageRequest> request =
        new DefaultRequest<SendMessageRequest>(sendMessageRequest, "AmazonSQS");
    request.addParameter("Action", "SendMessage");
    request.addParameter("Version", "2012-11-05");

    if (sendMessageRequest.getQueueUrl() != null) {
      request.addParameter("QueueUrl", StringUtils.fromString(sendMessageRequest.getQueueUrl()));
    }
    if (sendMessageRequest.getMessageBody() != null) {
      request.addParameter(
          "MessageBody", StringUtils.fromString(sendMessageRequest.getMessageBody()));
    }
    if (sendMessageRequest.getDelaySeconds() != null) {
      request.addParameter(
          "DelaySeconds", StringUtils.fromInteger(sendMessageRequest.getDelaySeconds()));
    }

    return request;
  }