{"ast_node_type":"other","tokens":[{"end":91,"kind":"keyword","start":0,"text":")"}]}
    ) -> ty::EarlyBinder<'tcx, ty::Binder<'tcx, ty::CoroutineWitnessTypes<TyCtxt<'tcx>>>> {
        def_id: DefId,
        desc { "looking up the hidden types stored across await points in a coroutine" }