<?php /** * Copyright © Magento, Inc. All rights reserved. * See COPYING.txt for license details. */ namespace Magento\Usps\Model\Source; /** * Freemethod source */ class Freemethod extends Method { /** * {@inheritdoc} */ public function toOptionArray() { $options = parent::toOptionArray(); array_unshift($options, ['value' => '', 'label' => __('None')]); return $options; } }