code: def offer(self, item, timeout=0):
          
          check_not_none(item, "item can't be none")
          return self._encode_invoke(transactional_queue_offer_codec, item=self._to_data(item),
                                     timeout=to_millis(timeout))
docs: Transactional implementation of :func:`Queue.offer(item, timeout) <hazelcast.proxy.queue.Queue.offer>`
  
          :param item: (object), the item to be added.
          :param timeout: (long), maximum time in seconds to wait for addition (optional).
          :return: (bool), ``true`` if the element was added to this queue, ``false`` otherwise.