code: public void deletePushMessageForSubscriber(String messageId, String reservationId, String subscriberName) throws  IOException {
          deleteMessage(messageId, reservationId, subscriberName);
      }
docs: Delete push message for subscriber by subscriber ID and message ID. If there is no message or subscriber,
  an EmptyQueueException is thrown.
  @param subscriberName The name of Subscriber.
  @param messageId The Message ID.
  @throws io.iron.ironmq.HTTPException If the IronMQ service returns a status other than 200 OK.
  @throws java.io.IOException If there is an error accessing the IronMQ server.