Unsubscribe from the supplied channels. If empty, unsubscribe from
        all channels

def unsubscribe(self, *args):
        """
        Unsubscribe from the supplied channels. If empty, unsubscribe from
        all channels
        """
        if args:
            args = list_or_args(args[0], args[1:])
            channels = self._normalize_keys(dict.fromkeys(args))
        else:
            channels = self.channels
        self.pending_unsubscribe_channels.update(channels)
        return self.execute_command('UNSUBSCRIBE', *args)