Horde_Kolab_Session::connect PHP Method

    public function connect($user_id = null, array $credentials = null);

 /**
  * Try to connect the session handler.
  *
  * @param string $user_id     The user ID to connect with.
  * @param array  $credentials An array of login credentials. For Kolab,
  *                            this must contain a "password" entry.
  *
  * @return NULL
  *
  * @throws Horde_Kolab_Session_Exception If the connection failed.
  */
 public function connect($user_id = null, array $credentials = null)
 {
     $this->_session->connect($user_id, $credentials);
 }