code: public ValidatorType<WebJsptaglibraryDescriptor> getOrCreateValidator()
     {
        Node node = model.getOrCreate("validator");
        ValidatorType<WebJsptaglibraryDescriptor> validator = new ValidatorTypeImpl<WebJsptaglibraryDescriptor>(this, "validator", model, node);
        return validator;
     }
docs: If not already created, a new <code>validator</code> element with the given value will be created.
  Otherwise, the existing <code>validator</code> element will be returned.
  @return  a new or existing instance of <code>ValidatorType<WebJsptaglibraryDescriptor></code>