{"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"s.chars().fold(String::with_capacity(s.len()),"}]}
    s.chars().fold(String::with_capacity(s.len()), |mut s, c| {
    // Otherwise, retain the input char.
        match OUTPUT_REPLACEMENTS.binary_search_by_key(&c, |(k, _)| *k) {