<?php /** * Copyright © Magento, Inc. All rights reserved. * See COPYING.txt for license details. */ namespace Magento\Tax\Model\Calculation; class RowBaseCalculator extends AbstractAggregateCalculator { /** * {@inheritdoc} */ protected function roundAmount( $amount, $rate = null, $direction = null, $type = self::KEY_REGULAR_DELTA_ROUNDING, $round = true, $item = null ) { if ($item->getAssociatedItemCode()) { // Use delta rounding of the product's instead of the weee's $type = $type . $item->getAssociatedItemCode(); } else { $type = $type . $item->getCode(); } return $this->deltaRound($amount, $rate, $direction, $type, $round); } }