def expire_instance(self, instance):
        stash = instance.__dict__
        for attribute in self.attributes:
            stash.pop(attribute, None)
Expire all memoized properties for *instance*.
dataset/ETHPy150Open goFrendiAsgard/kokoropy/kokoropy/packages/sqlalchemy/util/langhelpers.py/group_expirable_memoized_property.expire_instance