This command update a score of a given value. But it can be a new value
        of the sorted set, so we index it.

def _call_zincrby(self, command, value, *args, **kwargs):
        """
        This command update a score of a given value. But it can be a new value
        of the sorted set, so we index it.
        """
        if self.indexable:
            self.index([value])
        return self._traverse_command(command, value, *args, **kwargs)