code: public static CPTaxCategory findByGroupId_First(long groupId,
  		OrderByComparator<CPTaxCategory> orderByComparator)
  		throws com.liferay.commerce.product.exception.NoSuchCPTaxCategoryException {
  		return getPersistence().findByGroupId_First(groupId, orderByComparator);
  	}
docs: Returns the first cp tax category 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 cp tax category
  @throws NoSuchCPTaxCategoryException if a matching cp tax category could not be found