code: @Override
  	public CommercePaymentMethodGroupRel fetchByG_A_First(long groupId,
  		boolean active,
  		OrderByComparator<CommercePaymentMethodGroupRel> orderByComparator) {
  		List<CommercePaymentMethodGroupRel> list = findByG_A(groupId, active,
  				0, 1, orderByComparator);
  
  		if (!list.isEmpty()) {
  			return list.get(0);
  		}
  
  		return null;
  	}
docs: Returns the first commerce payment method group rel in the ordered set where groupId = &#63; and active = &#63;.
  
  @param groupId the group ID
  @param active the active
  @param orderByComparator the comparator to order the set by (optionally <code>null</code>)
  @return the first matching commerce payment method group rel, or <code>null</code> if a matching commerce payment method group rel could not be found