Method _is_userland_descriptor

lib/sqlalchemy/orm/mapper.py:3256–3267

(self, assigned_name: str, obj: Any)

        return result

    def _is_userland_descriptor(self, assigned_name: str, obj: Any) -> bool:
        if isinstance(
            obj,
            (
                _MappedAttribute,
                instrumentation.ClassManager,
                expression.ColumnElement,
            ),
        ):
            return False
        else:
            return assigned_name not in self._dataclass_fields

    @HasMemoized.memoized_attribute
    def _dataclass_fields(self):