{"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"Res::Def(DefKind::Ctor(_,"}]}
                        Res::Def(DefKind::Ctor(_, CtorKind::Const), _) => traits::IsConstable::Ctor,
                    match self.typeck_results.borrow().qpath_res(&qpath, element.hir_id) {
                        _ => traits::IsConstable::No,