public void addAdditionalPropsNotAllowedFor(String url, String pointer) {
    Set<String> newSet = myAdditionalPropertiesNotAllowedFor == null
                         ? new HashSet<>()
                         : new HashSet<>(myAdditionalPropertiesNotAllowedFor);
    newSet.add(url + pointer);
    myAdditionalPropertiesNotAllowedFor = newSet;
  }
public void addAdditionalPropsNotAllowedFor(String url, String pointer)