public function sendRemoveAccount($lg = null, $lc = null, $feedback = null)
    {
        $msgId = $this->createIqId();
        if ($feedback != null && strlen($feedback) > 0) {
            if ($lg == null) {
                $lg = '';
            }

            if ($lc == null) {
                $lc = '';
            }

            $child = new ProtocolNode('body',
                [
                    'lg' => $lg,
                    'lc' => $lc,
                ], null, $feedback);
            $childNode = [$child];
        } else {
            $childNode = null;
        }

        $removeNode = new ProtocolNode('remove', null, $childNode, null);
        $node = new ProtocolNode('iq',
            [
                'to'    => Constants::WHATSAPP_SERVER,
                'xmlns' => 'urn:xmpp:whatsapp:account',
                'type'  => 'get',
                'id'    => $msgId,
            ], [$removeNode], null);

        $this->sendNode($node);
        $this->waitForServer($msgId);
    }