private function getStreamActionIds($limit = 4)
 {
     $action = new DashboardStream('stream', Yii::$app->controller, ['limit' => $limit]);
     $wallEntries = $action->getWallEntries();
     $wallEntryIds = array_map(create_function('$entry', 'return $entry->id;'), $wallEntries);
     return $wallEntryIds;
 }
 /**
  * @inheritdoc
  */
 public function actions()
 {
     return ['stream' => ['class' => \humhub\modules\dashboard\components\actions\DashboardStream::className()]];
 }