public Parser addition_format3() {
        if (addition_format3Parser == null) {
           FutureParser future = scoped("addition_format3");
           addition_format3Parser = future;
           future.setParser(
               sequence(
                   plus(
                       choice(
                           identifier(),
                           literal()
                       )
                   ),
                   token("TO"),
                   plus(
                       sequence(
                           identifier(),
                           optional(
                               token("ROUNDED")
                           )
                       )
                   )
               )
           );
        }

        return addition_format3Parser;
    }