{"ast_node_type":"other","tokens":[{"end":40,"kind":"keyword","start":0,"text":"TyKind::Ref(region,"}]}
            TyKind::Ref(region, mt) => {
            TyKind::Ptr(mt) => hir::TyKind::Ptr(self.lower_mt(mt, itctx)),
                let lifetime = self.lower_ty_direct_lifetime(t, *region);