code: def _find_video(self):
          
          data = None
          if self.id:
              data = self.connection.get_item(
                  'find_video_by_id', video_id=self.id)
          elif self.reference_id:
              data = self.connection.get_item(
                  'find_video_by_reference_id', reference_id=self.reference_id)
  
          if data:
              self._load(data)
docs: Lookup and populate ``pybrightcove.video.Video`` object given a video
          id or reference_id.