nextcloud-server/apps/files_versions/lib/Versions/BackendNotFoundException.php

<?php
/**
 * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */
namespace OCA\Files_Versions\Versions;

class BackendNotFoundException extends \Exception {
}