Use new extenders (#26)

extensions/lock/src/Listener/AddDiscussionLockedAttributes.php

@@ -1,24 +0,0 @@
-<?php
-
-/*
- * This file is part of Flarum.
- *
- * For detailed copyright and license information, please view the
- * LICENSE file that was distributed with this source code.
- */
-
-namespace Flarum\Lock\Listener;
-
-use Flarum\Api\Event\Serializing;
-use Flarum\Api\Serializer\DiscussionSerializer;
-
-class AddDiscussionLockedAttributes
-{
-    public function handle(Serializing $event)
-    {
-        if ($event->isSerializer(DiscussionSerializer::class)) {
-            $event->attributes['isLocked'] = (bool) $event->model->is_locked;
-            $event->attributes['canLock'] = (bool) $event->actor->can('lock', $event->model);
-        }
-    }
-}