Method _clone

lib/sqlalchemy/sql/schema.py:4395–4400

(self, for_update: bool)

        return FetchedValue(self.for_update)

    def _clone(self, for_update: bool) -> Self:
        n = self.__class__.__new__(self.__class__)
        n.__dict__.update(self.__dict__)
        n.__dict__.pop("column", None)
        n.for_update = for_update
        return n

    def _set_parent(self, parent: SchemaEventTarget, **kw: Any) -> None:
        column = parent