docs: @Override
  	public CPDefinitionOptionValueRel fetchByKey_Last(String key,
  		OrderByComparator<CPDefinitionOptionValueRel> orderByComparator) {
  		int count = countByKey(key);
  
  		if (count == 0) {
  			return null;
  		}
  
  		List<CPDefinitionOptionValueRel> list = findByKey(key, count - 1,
  				count, orderByComparator);
  
  		if (!list.isEmpty()) {
  			return list.get(0);
  		}
  
  		return null;
  	}