function createManager($services, $yadis_url = null)
{
$key = $this->getSessionKey();
if ($this->getManager()) {
return $this->getManager();
}
if ($services) {
$loader = new Auth_Yadis_ManagerLoader();
$manager = new Auth_Yadis_Manager($this->url, $yadis_url, $services, $key);
$this->session->set($this->session_key, serialize($loader->toSession($manager)));
return $manager;
}
}