code: public static byte[] generateMessageRequestBody(final String message) throws IllegalArgumentException,
              IllegalStateException, IOException {
          final StringWriter outWriter = new StringWriter();
          final XmlSerializer xmlw = Utility.getXmlSerializer(outWriter);
  
          // default is UTF8
          xmlw.startDocument(Constants.UTF8_CHARSET, true);
          xmlw.startTag(Constants.EMPTY_STRING, QueueConstants.QUEUE_MESSAGE_ELEMENT);
  
          Utility.serializeElement(xmlw, QueueConstants.MESSAGE_TEXT_ELEMENT, message);
  
          // end QueueMessage_ELEMENT
          xmlw.endTag(Constants.EMPTY_STRING, QueueConstants.QUEUE_MESSAGE_ELEMENT);
  
          // end doc
          xmlw.endDocument();
  
          return outWriter.toString().getBytes(Constants.UTF8_CHARSET);
      }
docs: Generates the message request body from a string containing the message.
  The message must be encodable as UTF-8. To be included in a web request,
  this message request body must be written to the output stream of the web
  request.
  
  @param message
  A <code>String<code> containing the message to wrap in a message request body.
  
  @return An array of <code>byte</code> containing the message request body
  encoded as UTF-8.
  @throws IOException
  if there is an error writing the queue message.
  @throws IllegalStateException
  if there is an error writing the queue message.
  @throws IllegalArgumentException
  if there is an error writing the queue message.