{"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"ty::CoroutineClosure(_,"}]}
        ty::CoroutineClosure(_, args) => {
        ty::Closure(_, args) => builder.tuple_like_shim(dest, src, args.as_closure().upvar_tys()),
            builder.tuple_like_shim(dest, src, args.as_coroutine_closure().upvar_tys())