---
features:
  - |
    Add API extension ``filter-validation``. This extension indicates if the
    server supports validation on filter parameters of the list requests.
other:
  - |
    API extension ``filter-validation`` relies on the ``is_filter`` keyword
    in the ``RESOURCE_ATTRIBUTE_MAP`` to judge if an attribute can be used as
    filter. Neutron plugins which want to support filter validation
    needs to set ``is_filter`` to ``True`` for each attribute in their
    resource attribute map.