code: @Override
  	public CommerceOrderItem fetchByCPInstanceId_First(long CPInstanceId,
  		OrderByComparator<CommerceOrderItem> orderByComparator) {
  		List<CommerceOrderItem> list = findByCPInstanceId(CPInstanceId, 0, 1,
  				orderByComparator);
  
  		if (!list.isEmpty()) {
  			return list.get(0);
  		}
  
  		return null;
  	}
docs: Returns the first commerce order item in the ordered set where CPInstanceId = &#63;.
  
  @param CPInstanceId the cp instance ID
  @param orderByComparator the comparator to order the set by (optionally <code>null</code>)
  @return the first matching commerce order item, or <code>null</code> if a matching commerce order item could not be found