def subject(self, roomJID, subject):
        message = GroupChat(roomJID.userhostJID(), subject=subject)
        self.send(message.toElement())
Add  a subscription to data table
dataset/ETHPy150Open ralphm/wokkel/wokkel/muc.py/MUCClientProtocol.subject--crossover with--dataset/ETHPy150Open cmorgan/trading-with-python/lib/interactivebrokers.py/Subscriptions.add