def METHOD_NAME(self) -> str:
    """Return a combined identifier for the whole pack if this has more than one episode."""
    # Currently only supports ep mode
    if self.id_type == 'ep':
        if self.episodes > 1:
            return 'S%02dE%02d-E%02d' % (
                self.season,
                self.episode,
                self.episode + self.episodes - 1,
            )
        else:
            return self.identifier
    else:
        return self.identifier