docs: @Override
  	public CommerceDiscountRel fetchByCD_CN_Last(long commerceDiscountId,
  		long classNameId,
  		OrderByComparator<CommerceDiscountRel> orderByComparator) {
  		int count = countByCD_CN(commerceDiscountId, classNameId);
  
  		if (count == 0) {
  			return null;
  		}
  
  		List<CommerceDiscountRel> list = findByCD_CN(commerceDiscountId,
  				classNameId, count - 1, count, orderByComparator);
  
  		if (!list.isEmpty()) {
  			return list.get(0);
  		}
  
  		return null;
  	}