def find_user(self, name_or_id, ignore_missing=True):
        return self._find(_user.User, name_or_id,
                          ignore_missing=ignore_missing)
Dynamic properties can be used in query filters.
dataset/ETHPy150Open openstack/python-openstacksdk/openstack/database/v1/_proxy.py/Proxy.find_user--crossover with--dataset/ETHPy150Open jahlborn/appengine-rest-server/src/main/python/rest/__init__.py/DynamicPropertyHandler.can_query