code: public String getMessage(final String code) {
      checkNotNull(code);
  
      for (ResourceBundle bundle : bundles) {
        try {
          return bundle.getString(code);
        }
        catch (MissingResourceException e) {
          log.trace(e.toString(), e);
        }
      }
  
      throw new ResourceNotFoundException(code);
    }
docs: Get a raw message from the resource bundles using the given code.