{"ast_node_type":"variable","tokens":[{"end":75,"kind":"keyword","start":0,"text":"let"}]}
            let rhs_chars = r_info.chars().map(|c| c.to_ascii_lowercase());
            let lhs_chars = l_info.chars().map(|c| c.to_ascii_lowercase());
            lhs_chars.cmp(rhs_chars)