{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"(ImplPolarity::Reservation,"}]}
            (ImplPolarity::Reservation, _) | (_, ImplPolarity::Reservation) => {
        match (impl1.polarity, impl2.polarity) {
                // `#[rustc_reservation_impl]` impls don't overlap with anything