OrderInterface.php

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

use Magento\Framework\App\ActionInterface;

/**
 * Interface \Magento\Sales\Controller\OrderInterface
 *
 */
interface OrderInterface extends ActionInterface
{
}