koseven/system/classes/KO7/Config/Source.php

<?php
/**
 * Base Config source Interface
 *
 * Used to identify either config readers or writers when calling [KO7_Config::attach()]
 *
 * @package    KO7
 * @category   Configuration
 *
 * @copyright  (c) 2007-2016  Kohana Team
 * @copyright  (c) since 2016 Koseven Team
 * @license    https://koseven.dev/LICENSE
 */

interface KO7_Config_Source {}