code: def artist_commentary_revert(self, id_, version_id):
          
          params = {'version_id': version_id}
          return self._get('artist_commentaries/{0}/revert.json'.format(id_),
                           params, method='PUT', auth=True)
docs: Revert artist commentary (Requires login) (UNTESTED).
  
          Parameters:
              id_ (int): The artist commentary id.
              version_id (int): The artist commentary version id to
                                revert to.