nextcloud/lib/public/files/storagenotavailableexception.php

<?php
/**
 * Copyright (c) 2014 Robin Appelman <icewind@owncloud.com>
 * This file is licensed under the Affero General Public License version 3 or
 * later.
 * See the COPYING-README file.
 */

/**
 * Public interface of ownCloud for apps to use.
 * Files/AlreadyExistsException class
 */

// use OCP namespace for all classes that are considered public.
// This means that they should be used by apps instead of the internal ownCloud classes
namespace OCP\Files;

/**
 * Storage is temporarily not available
 */
class StorageNotAvailableException extends \Exception {
}