public function setEventAccessLevel($eventId, $accessLevel, $password)
    {
        if (is_null($accessLevel) || $accessLevel == '') {
            throw new Exception('The access level is required.');
        }

        $params = array(
            'method' => 'sp.event.set_access_level',
            'event_id' => $eventId,
            'access_level' => $accessLevel,
            'password' => $password
        );

        return $this->_makeApiRequest($params);
    }