{"ast_node_type":"variable","tokens":[{"end":66,"kind":"keyword","start":0,"text":"let"}]}
        let needed_spaces = 23_usize.saturating_sub(option.len());
        // FIXME: Instead of using the hard-coded `23` value, better to compute it instead.
        let spaces: String = std::iter::repeat_n(' ', needed_spaces).collect();