public function gc($maxLifeTime)
 {
     ezpEvent::getInstance()->notify('session/gc', array($maxLifeTime));
     $db = eZDB::instance();
     eZSession::triggerCallback('gc_pre', array($db, $maxLifeTime));
     $sfHandler = $this->storage->getSaveHandler();
     if (method_exists($sfHandler, 'gc')) {
         $sfHandler->gc($maxLifeTime);
     }
     eZSession::triggerCallback('gc_post', array($db, $maxLifeTime));
     return false;
 }
 public function getSaveHandler()
 {
     if ( $this->innerSessionStorage instanceof NativeSessionStorage )
     {
         return $this->innerSessionStorage->getSaveHandler();
     }
 }