{"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"ty::Foreign(def_id)"}]}
            ty::Foreign(def_id) => format!("extern type `{}`", tcx.def_path_str(def_id)).into(),
        match *self.kind() {
            ty::FnDef(def_id, ..) => match tcx.def_kind(def_id) {