{"ast_node_type":"variable","tokens":[{"end":75,"kind":"keyword","start":0,"text":"if"}]}
        if let Some((value, index)) = query.query_cache(qcx).lookup(&key) {
    if qcx.dep_context().sess().threads() > 1 {
            qcx.dep_context().profiler().query_cache_hit(index.into());