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