See https://opendev.org/openstack/oslo.policy/src/branch/master/oslo_policy/_external.py#L36 and https://opendev.org/openstack/oslo.policy/src/branch/master/oslo_policy/_external.py#L75 for the relevant implementations.
See https:/ /opendev. org/openstack/ oslo.policy/ src/branch/ master/ oslo_policy/ _external. py#L36 and https:/ /opendev. org/openstack/ oslo.policy/ src/branch/ master/ oslo_policy/ _external. py#L75 for the relevant implementations.