{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"AggregateKind::Coroutine(def_id,"}]}
                    AggregateKind::Coroutine(def_id, _) => ty::tls::with(|tcx| {
                        let name = format!("{{coroutine@{:?}}}", tcx.def_span(def_id));