code: def get_options_for_model(self, model):
          
          opts = self._get_options_for_model(model)
          if not opts.registered and not opts.related:
              raise NotRegistered('The model "%s" is not registered for '
                                  'translation' % model.__name__)
          return opts
docs: Thin wrapper around ``_get_options_for_model`` to preserve the
          semantic of throwing exception for models not directly registered.