def get_app_settings(self, extra=None):
        if extra in None:
            extra = {}
        extra.setdefault('kinto.flush_endpoint_enabled', True)
        settings = super(FlushViewTest, self).get_app_settings(extra)
        return settings
dataset/ETHPy150Open Kinto/kinto/kinto/tests/test_views_flush.py/FlushViewTest.get_app_settings/operator `is` -> `in`