code: public static CommerceTierPriceEntry findByGroupId_First(long groupId,
  		OrderByComparator<CommerceTierPriceEntry> orderByComparator)
  		throws com.liferay.commerce.price.list.exception.NoSuchTierPriceEntryException {
  		return getPersistence().findByGroupId_First(groupId, orderByComparator);
  	}
docs: Returns the first commerce tier price entry 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 commerce tier price entry
  @throws NoSuchTierPriceEntryException if a matching commerce tier price entry could not be found