code: @Override
    @RunAsSystem
    public String resolveCodeWithoutArguments(String code, Locale locale) {
      return Optional.ofNullable(
              dataService.query(L10N_STRING, L10nString.class).eq(MSGID, code).findOne())
          .map(l10nString -> l10nString.getString(locale))
          .orElse(null);
    }
docs: Looks up a single localized message.
  
  @param code messageID
  @param locale the Locale for the language
  @return String containing the message or null if not specified