public function sendDeleteBroadcastLists($lists)
    {
        $msgId = $this->createIqId();
        $listNode = [];
        if ($lists != null && count($lists) > 0) {
            for ($i = 0; $i < count($lists); $i++) {
                $listNode[$i] = new ProtocolNode('list', ['id' => $lists[$i]], null, null);
            }
        } else {
            $listNode = null;
        }
        $deleteNode = new ProtocolNode('delete', null, $listNode, null);
        $node = new ProtocolNode('iq',
            [
                'id'    => $msgId,
                'xmlns' => 'w:b',
                'type'  => 'set',
                'to'    => Constants::WHATSAPP_SERVER,
            ], [$deleteNode], null);

        $this->sendNode($node);
    }