public function sendGetPrivacySettings()
    {
        $msgId = $this->nodeId['privacy_settings'] = $this->createIqId();
        $privacyNode = new ProtocolNode('privacy', null, null, null);
        $node = new ProtocolNode('iq',
            [
                'to'    => Constants::WHATSAPP_SERVER,
                'id'    => $msgId,
                'xmlns' => 'privacy',
                'type'  => 'get',
            ], [$privacyNode], null);

        $this->sendNode($node);
    }