code: public FessMessages addErrorsUnknownVersionForUpgrade(String property) {
          assertPropertyNotNull(property);
          add(property, new UserMessage(ERRORS_unknown_version_for_upgrade));
          return this;
      }
docs: Add the created action message for the key 'errors.unknown_version_for_upgrade' with parameters.
  <pre>
  message: Unknown version information.
  </pre>
  @param property The property name for the message. (NotNull)
  @return this. (NotNull)