{"ast_node_type":"other","tokens":[{"end":39,"kind":"keyword","start":0,"text":"tcx.has_attr(def_id,"}]}
        tcx.has_attr(def_id, sym::lang)
    fn has_lang_attr(tcx: TyCtxt<'_>, def_id: LocalDefId) -> bool {
            // Stable attribute for #[lang = "panic_impl"]