{"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"//"}]}
            // coroutines, closures, and coroutine-closures all have upvars that may be named.
        match layout.ty.kind() {
            ty::Closure(def_id, _) | ty::Coroutine(def_id, _) | ty::CoroutineClosure(def_id, _) => {