code: public static CommerceOrderItem findByCProductId_First(long CProductId,
  		OrderByComparator<CommerceOrderItem> orderByComparator)
  		throws com.liferay.commerce.exception.NoSuchOrderItemException {
  		return getPersistence()
  				   .findByCProductId_First(CProductId, orderByComparator);
  	}
docs: Returns the first commerce order item in the ordered set where CProductId = &#63;.
  
  @param CProductId the c product ID
  @param orderByComparator the comparator to order the set by (optionally <code>null</code>)
  @return the first matching commerce order item
  @throws NoSuchOrderItemException if a matching commerce order item could not be found