{"ast_node_type":"other","tokens":[{"end":48,"kind":"keyword","start":0,"text":"Some(PoloniusLivenessContext::default())"}]}
        Some(PoloniusLivenessContext::default())
    let polonius_liveness = if infcx.tcx.sess.opts.unstable_opts.polonius.is_next_enabled() {
    } else {