public function storeRecordSet(RecordSet $set, $key, $lifetime = null) { $class = $set->getClassName(); $fullKey = $this->_buildSetKey($class, $key); $ids = []; foreach ($set as $item) { $ids[] = $item->id; $this->storeRecord($item, $lifetime); } $this->_cacher->writeData($fullKey, $ids, $lifetime); }