{"ast_node_type":"other","tokens":[{"end":59,"kind":"keyword","start":0,"text":"impl<T1:"}]}
impl<T1: StableOrd, T2: StableOrd> StableOrd for (T1, T2) {
    const CAN_USE_UNSTABLE_SORT: bool = T1::CAN_USE_UNSTABLE_SORT && T2::CAN_USE_UNSTABLE_SORT;