public function publishEventsToSns($key, $secret, $topicArn)
    {
        $this->setArgument("sns_publish_enabled", true);
        $this->setArgument("sns_access_key", $key);
        $this->setArgument("sns_access_secret", $secret);
        return $this->setArgument("sns_topic", $topicArn);
    }