public function update($itemData, $createIfAbsent = false)
    {
        if ($createIfAbsent) {
            trigger_error("Option 'createIfAbsent' is no more use.", E_DEPRECATED);
        }

        if (method_exists($this->dataSource, "update")) {
            return $this->dataSource->update($itemData, $createIfAbsent);
        } else {
            throw new DataStoreException("Refreshable don't haw method update");
        }
    }