code: @Override
      public SendMessageResult sendMessage(SendMessageRequest request) {
          request = beforeClientExecution(request);
          return executeSendMessage(request);
      }
docs: <p>
  Delivers a message to the specified queue.
  </p>
  <important>
  <p>
  A message can include only XML, JSON, and unformatted text. The following Unicode characters are allowed:
  </p>
  <p>
  <code>#x9</code> | <code>#xA</code> | <code>#xD</code> | <code>#x20</code> to <code>#xD7FF</code> |
  <code>#xE000</code> to <code>#xFFFD</code> | <code>#x10000</code> to <code>#x10FFFF</code>
  </p>
  <p>
  Any characters not included in this list will be rejected. For more information, see the <a
  href="http://www.w3.org/TR/REC-xml/#charsets">W3C specification for characters</a>.
  </p>
  </important>
  
  @param sendMessageRequest
  @return Result of the SendMessage operation returned by the service.
  @throws InvalidMessageContentsException
  The message contains characters outside the allowed set.
  @throws UnsupportedOperationException
  Error code 400. Unsupported operation.
  @sample AmazonSQS.SendMessage
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/sqs-2012-11-05/SendMessage" target="_top">AWS API
  Documentation</a>