{"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"RegionCtxt::Existential(Some(_))"}]}
            RegionCtxt::Existential(Some(_)) | RegionCtxt::Free(_) => 2,
            RegionCtxt::Existential(None) => 2,
            RegionCtxt::Location(_) => 3,