protected function _getDefaultCostsSummary( $iLineItem )
    {
        /** @var OxpsPaymorrowOxBasket|oxBasket $this */

        $aCostItems = array();

        $aCosts = (array) $this->getCosts();

        foreach ( $aCosts as $sCost => $oPrice ) {
            $aItemData = (array) $this->_validateCostPriceAndGetItsData( $oPrice, $iLineItem, $sCost );

            if ( !empty( $aItemData ) ) {
                $aCostItems = array_merge( $aCostItems, $aItemData );
                $iLineItem++;
            }
        }

        return array($aCostItems, $iLineItem);
    }