docs: def _to_dict(self):
          """Return a json dictionary representing this model."""
          _dict = {}
          if hasattr(self, 'site_collection_path'
                    ) and self.site_collection_path is not None:
              _dict['site_collection_path'] = self.site_collection_path
          if hasattr(self, 'limit') and self.limit is not None:
              _dict['limit'] = self.limit
          return _dict