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

<?php
/**
 * Base Config source Interface
 *
 * Used to identify either config readers or writers when calling [Kohana_Config::attach()]
 *
 * @package    Kohana
 * @category   Configuration
 * @author     Kohana Team
 * @copyright  (c) Kohana Team
 * @license    https://koseven.ga/LICENSE.md
 */

interface Kohana_Config_Source {}