<?php /** * Copyright © Magento, Inc. All rights reserved. * See COPYING.txt for license details. */ namespace Magento\Customer\Api; /** * Interface for system configuration operations for customer groups. * * @api * @since 101.0.0 */ interface CustomerGroupConfigInterface { /** * Set system default customer group. * * @param int $id * @return int * @throws \UnexpectedValueException * @throws \Exception * @throws \Magento\Framework\Exception\NoSuchEntityException * @throws \Magento\Framework\Exception\LocalizedException * @since 101.0.0 */ public function setDefaultCustomerGroup($id); }