{"ast_node_type":"other","tokens":[{"end":47,"kind":"keyword","start":0,"text":"if"}]}
            if tcx.type_alias_is_lazy(def_id) {
            check_type_alias_type_params_are_used(tcx, def_id);
                res = res.and(enter_wf_checking_ctxt(tcx, def_id, |wfcx| {