{"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"DefiningTy::Closure(_,"}]}
                        DefiningTy::Closure(_, args) => args.as_closure().kind(),
                    let closure_kind = match def_ty {
                        DefiningTy::CoroutineClosure(_, args) => args.as_coroutine_closure().kind(),