newsupernova/vendor/magento/module-catalog/Model/EntityInterface.php

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

namespace Magento\Catalog\Model;

/**
 * Interface EntityInterface
 */
interface EntityInterface
{
    /**
     * @return string
     */
    public function getEntityId();
}