function sendHideManialinkPage($recipient = null, $multicall = false)
    {
        $logins = $this->getLogins($recipient, true);
        if ($logins === false) {
            throw new InvalidArgumentException('recipient = ' . print_r($recipient, true));
        }

        if ($logins) {
            return $this->execute(ucfirst(__FUNCTION__) . 'ToLogin', array($logins), $multicall);
        }
        return $this->execute(ucfirst(__FUNCTION__), array(), $multicall);
    }