{"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"res"}]}
                res = res.and(enter_wf_checking_ctxt(tcx, def_id, |wfcx| {
            if tcx.type_alias_is_lazy(def_id) {
                    let ty = tcx.type_of(def_id).instantiate_identity();