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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def multipublish(self, topic, messages, block=True, timeout=None, raise_error=True):
 """Publish an iterable of messages to the given topic. :param topic: the topic to publish to :param messages: iterable of bytestrings to publish :param block: wait for a connection to become available before publishing the message. If block is `False` and no connections are available, :class:`~gnsq.errors.NSQNoConnections` is raised :param timeout: if timeout is a positive number, it blocks at most ``timeout`` seconds before raising :class:`~gnsq.errors.NSQNoConnections` :param raise_error: if ``True``, it blocks until a response is received from the nsqd server, and any error response is raised. Otherwise an :class:`~gevent.event.AsyncResult` is returned """

        result = AsyncResult()
        conn = self._get_connection(block=block, timeout=timeout)

        try:
            self._response_queues[conn].append(result)
            conn.multipublish(topic, messages)
        finally:
            self._put_connection(conn)

        if raise_error:
            return result.get()

        return result