Return a boolean indicating whether given alias exists for this index.

        Any additional keyword arguments will be passed to
        ``Elasticsearch.indices.exists_alias`` unchanged.

def exists_alias(self, using=None, **kwargs):
        """
        Return a boolean indicating whether given alias exists for this index.

        Any additional keyword arguments will be passed to
        ``Elasticsearch.indices.exists_alias`` unchanged.
        """
        return self._get_connection(using).indices.exists_alias(index=self._name, **kwargs)