public function filterByNotificationSender($notificationSender = null, $comparison = null)
    {
        if (null === $comparison) {
            if (is_array($notificationSender)) {
                $comparison = Criteria::IN;
            } elseif (preg_match('/[\%\*]/', $notificationSender)) {
                $notificationSender = str_replace('*', '%', $notificationSender);
                $comparison = Criteria::LIKE;
            }
        }

        return $this->addUsingAlias(RemoteAppPeer::NOTIFICATION_SENDER, $notificationSender, $comparison);
    }