Preforms a refresh operation on the index.

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

def refresh(self, using=None, **kwargs):
        """
        Preforms a refresh operation on the index.

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