private function getStreamActionIds($container, $limit = 4)
 {
     $action = new ContentContainerStreamAction(Yii::app()->getController(), 'testAc');
     $action->contentContainer = $container;
     $action->limit = $limit;
     $action->init();
     $wallEntries = $action->getWallEntries();
     $wallEntryIds = array_map(create_function('$entry', 'return $entry->id;'), $wallEntries);
     return $wallEntryIds;
 }