code: def get_instance(self, payload):
          
          return PublishedTrackInstance(
              self._version,
              payload,
              room_sid=self._solution['room_sid'],
              participant_sid=self._solution['participant_sid'],
          )
docs: Build an instance of PublishedTrackInstance
  
          :param dict payload: Payload response from the API
  
          :returns: twilio.rest.video.v1.room.room_participant.room_participant_published_track.PublishedTrackInstance
          :rtype: twilio.rest.video.v1.room.room_participant.room_participant_published_track.PublishedTrackInstance