public function shutdown()
{
$storage = $this->getContext()->getStorage();
// write the last request time to the storage
$storage->write(self::LAST_REQUEST_NAMESPACE, $this->lastRequest);
$storage->write(self::AUTH_NAMESPACE, $this->authenticated);
$storage->write(self::CREDENTIAL_NAMESPACE, $this->credentials);
// call the parent shutdown method
parent::shutdown();
}
