def alter_configs(self, config_resources):
        """Alter configuration parameters of one or more Kafka resources.

        Warning:
            This is currently broken for BROKER resources because those must be
            sent to that specific broker, versus this always picks the
            least-loaded node. See the comment in the source code for details.
            We would happily accept a PR fixing this.

        :param config_resources: A list of ConfigResource objects.
        :return: Appropriate version of AlterConfigsResponse class.
        """
        version = self._matching_api_version(AlterConfigsRequest)
        if version == 0:
            request = AlterConfigsRequest[version](
                resources=[self._convert_alter_config_resource_request(config_resource) for config_resource in config_resources]
            )
        else:
            raise NotImplementedError(
                "Support for AlterConfigs v{} has not yet been added to KafkaAdminClient."
                .format(version))
        # TODO the Java client has the note:
        # // We must make a separate AlterConfigs request for every BROKER resource we want to alter
        # // and send the request to that specific broker. Other resources are grouped together into
        # // a single request that may be sent to any broker.
        #
        # So this is currently broken as it always sends to the least_loaded_node()
        return self._send_request_to_node(self._client.least_loaded_node(), request)