server/apps/files_trashbin/appinfo/app.php

<?php
/**
 * @copyright Copyright (c) 2016, ownCloud, Inc.
 *
 * @author Christopher Schäpers <kondou@ts.unde.re>
 * @author Florin Peter <github@florin-peter.de>
 * @author John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>
 * @author Jörn Friedrich Dreyer <jfd@butonic.de>
 * @author Victor Dubiniuk <dubiniuk@owncloud.com>
 * @author Vincent Petry <pvince81@owncloud.com>
 *
 * @license AGPL-3.0
 *
 * This code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License, version 3,
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 *
 */

// register hooks
\OCA\Files_Trashbin\Trashbin::registerHooks();

\OCA\Files\App::getNavigationManager()->add(function () {
	$l = \OC::$server->getL10N('files_trashbin');
	return [
		'id' => 'trashbin',
		'appname' => 'files_trashbin',
		'script' => 'list.php',
		'order' => 50,
		'name' => $l->t('Deleted files'),
		'classes' => 'pinned',
	];
});