>>> (indent 2)
  String lookupMessage(
      String message_str, [final String desc = '', final Map examples = const {
  }, String locale, String name, List<String> args, String meaning]) =>
      message_str;
<<<
  String lookupMessage(String message_str, [final String desc = '',
      final Map examples = const {}, String locale, String name,
      List<String> args, String meaning]) => message_str;