{"ast_node_type":"variable","tokens":[{"end":73,"kind":"keyword","start":0,"text":"let"}]}
        let tuple_tmp_args = tuple_tys.iter().enumerate().map(|(i, ty)| {
        // The `tmp0`, `tmp1`, and `tmp2` in our example above.
            // This is e.g., `tuple_tmp.0` in our example above.