{"ast_node_type":"variable","tokens":[{"end":82,"kind":"keyword","start":0,"text":"if"}]}
        if let Some((descr, def_id, args, non_exhaustive)) = non_exhaustive_1zst {
    for (span, _trivial, non_exhaustive_1zst) in field_infos {
            // If there are any non-trivial fields, then there can be no non-exhaustive 1-zsts.