It should be "interface"; see the "API Resources" section of the v3 doc for the current "source of truth":
https://github.com/openstack/identity-api/blob/master/openstack-identity-api/src/markdown/identity-api-v3.md#endpoints-v3endpoints
This section has evolved a bit ahead of the verbose examples in the "Core API" section.
It should be "interface"; see the "API Resources" section of the v3 doc for the current "source of truth":
https:/ /github. com/openstack/ identity- api/blob/ master/ openstack- identity- api/src/ markdown/ identity- api-v3. md#endpoints- v3endpoints
This section has evolved a bit ahead of the verbose examples in the "Core API" section.