{"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"UpvarArgs::Closure(args)"}]}
                UpvarArgs::Closure(args) => args.as_closure().kind_ty(),
            let closure_kind_ty = match args {
                UpvarArgs::CoroutineClosure(args) => args.as_coroutine_closure().kind_ty(),