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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 pubsub_pub(self, topic, payload, **kwargs):
 """Publish a message to a given pubsub topic Publishing will publish the given payload (string) to everyone currently subscribed to the given topic. All data (including the id of the publisher) is automatically base64 encoded when published. .. code-block:: python # publishes the message 'message' to the topic 'hello' [] Parameters topic : str Topic to publish to payload : Data to be published to the given topic Returns ------- list : empty list """

        args = (topic, payload)
        return self._client.request('/pubsub/pub', args,
                                    decoder='json', **kwargs)