def init_instance(self, row=None):
        return self._meta.model()
Deletes the specified policy document for the specified group.
dataset/ETHPy150Open django-import-export/django-import-export/import_export/resources.py/ModelResource.init_instance--crossover with--dataset/ETHPy150Open darcyliu/storyboard/boto/iam/connection.py/IAMConnection.delete_group_policy