code: private boolean isProductive(Class<?> bundleClass) {
  
      NlsBundleOptions options = bundleClass.getAnnotation(NlsBundleOptions.class);
      if (options != null) {
        return options.productive();
      }
      return true;
    }
docs: Determines if the given {@code bundleClass} is {@link NlsBundleOptions#productive() productive}.
  
  @param bundleClass is the {@link Class} to test.
  @return {@code true} if {@link NlsBundleOptions#productive() productive}, {@code false} otherwise.