def gateway_snapshot(self, indices=None):
        """
        Gateway snapshot one or more indices
        (See :ref:`es-guide-reference-api-admin-indices-gateway-snapshot`)

        :keyword indices: a list of indices or None for default configured.
        """
        path = self.conn._make_path(indices, (), '_gateway', 'snapshot')
        return self.conn._send_request('POST', path)