---
features:
  - |
    Introduces extension parent resources owner check in
    ``neutron.policy.OwnerCheck``. It can be used by registering an extension
    parent resource and service plugin which introduced the corresponding
    parent resource into ``EXT_PARENT_RESOURCE_MAPPING`` located in
    ``neutron.common.constants``. And introduces a new policy role
    ``admin_or_ext_parent_owner`` into ``policy.json`` for this function.
