docs: 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)