{
      FeatureMapUtil.Validator validator = FeatureMapUtil.getValidator(owner.eClass(), feature);
      for (int i = 0, size = delegateSize(); i < size; ++i)
      {
        Entry entry = delegateGet(i);
        if (validator.isValid(entry.getEStructuralFeature()))
        {
          throw new IllegalArgumentException("The multiplicity constraint is violated");
        }
      }
    }