code: public DeleteMessageResult deleteMessage(String queueUrl, String receiptHandle)
  			throws AmazonServiceException, AmazonClientException {
  
  		return amazonSqsToBeExtended.deleteMessage(queueUrl, receiptHandle);
  	}
docs: <p>
  Deletes the specified message from the specified queue. You specify the
  message by using the message's <code>receipt handle</code> and not the
  <code>message ID</code> you received when you sent the message. Even if
  the message is locked by another reader due to the visibility timeout
  setting, it is still deleted from the queue. If you leave a message in
  the queue for longer than the queue's configured retention period, Amazon
  SQS automatically deletes it.
  </p>
  <p>
  <b>NOTE:</b> The receipt handle is associated with a specific instance of
  receiving the message. If you receive a message more than once, the
  receipt handle you get each time you receive the message is different.
  When you request DeleteMessage, if you don't provide the most recently
  received receipt handle for the message, the request will still succeed,
  but the message might not be deleted.
  </p>
  <p>
  <b>IMPORTANT:</b> It is possible you will receive a message even after
  you have deleted it. This might happen on rare occasions if one of the
  servers storing a copy of the message is unavailable when you request to
  delete the message. The copy remains on the server and might be returned
  to you again on a subsequent receive request. You should create your
  system to be idempotent so that receiving a particular message more than
  once is not a problem.
  </p>
  
  @param queueUrl
  The URL of the Amazon SQS queue to take action on.
  @param receiptHandle
  The receipt handle associated with the message to delete.
  
  @return The response from the DeleteMessage service method, as returned
  by AmazonSQS.
  
  @throws ReceiptHandleIsInvalidException
  @throws InvalidIdFormatException
  
  @throws AmazonClientException
  If any internal errors are encountered inside the client
  while attempting to make the request or handle the response.
  For example if a network connection is not available.
  @throws AmazonServiceException
  If an error response is returned by AmazonSQS indicating
  either a problem with the data in the request, or a server
  side issue.