def replace(self, scaling_group, name, cooldown, min_entities,
            max_entities, metadata=None):
        """
        Replace an existing ScalingGroup configuration. All of the attributes
        must be specified If you wish to delete any of the optional attributes,
        pass them in as None.
        """
        body = self._create_group_config_body(name, cooldown, min_entities,
                max_entities, metadata=metadata)
        group_id = utils.get_id(scaling_group)
        uri = "/%s/%s/config" % (self.uri_base, group_id)
        resp, resp_body = self.api.method_put(uri, body=body)
Replace an existing ScalingGroup configuration. All of the attributes
        must be specified If you wish to delete any of the optional attributes,
        pass them in as None.