DefaultValidatorBean use provided BeanManager to check for the existence of ValidationServices, but look it up via Container.instance().getServices...

      public Validator call() throws Exception
      {
         if (getBeanManager().getServices().contains(ValidationServices.class))
         {
            // This should probably be getBeanManager().getServices().get(ValidationServices.class).....
            return Container.instance().services().get(ValidationServices.class).getDefaultValidatorFactory().getValidator();
         }
         else
         {
            throw new IllegalStateException(VALIDATION_SERVICE_NOT_AVAILABLE);
         }
      }