6 * Every database object that supports polls has to implement this interface.
8 * @author Matthias Schmidt
9 * @copyright 2001-2019 WoltLab GmbH
10 * @license GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
11 * @package WoltLabSuite\Core\Data
14 interface IPollContainer
extends IIDObject
, IPollObject
17 * Returns the id of the poll that belongs to this object or `null` if there is no such poll.
21 public function getPollID();