/**
  * Fetches an entry from the cache.
  *
  * @param string $id The id of the cache entry to fetch.
  *
  * @return mixed|false The cached data or FALSE, if no cache entry exists for the given id.
  */
 protected function doFetch($id)
 {
     $e = $this->getStopwatchEvent(__FUNCTION__);
     $result = parent::doFetch($id);
     if ($e) {
         $e->stop();
     }
     return $result;
 }