protected function _getPaymorrowVouchersSummary( $iLineItem )
    {
        $sPmPrefix = OxpsPaymorrowOxBasketItem::getPaymorrowBasketSummaryLineItemPrefix( $iLineItem );

        /** @var oxPrice $oVoucher */
        $oVoucher = $this->getVoucherDiscount();

        return array(
            $sPmPrefix . 'quantity'       => 1,
            $sPmPrefix . 'articleId'      => 'Voucher',
            $sPmPrefix . 'name'           => 'VoucherCosts',
            $sPmPrefix . 'type'           => 'VOUCHER',
            $sPmPrefix . 'unitPriceGross' => (double) $oVoucher->getBruttoPrice(),
            $sPmPrefix . 'grossAmount'    => (double) $oVoucher->getBruttoPrice(),
            $sPmPrefix . 'vatAmount'      => 0.0,
            $sPmPrefix . 'vatRate'        => 0.0,
        );
    }