@Override
    public ListConsumerGroupOffsetsResult listConsumerGroupOffsets(Map<String, ListConsumerGroupOffsetsSpec> groupSpecs,
                                                                   ListConsumerGroupOffsetsOptions options) {
        SimpleAdminApiFuture<CoordinatorKey, Map<TopicPartition, OffsetAndMetadata>> future =
                ListConsumerGroupOffsetsHandler.newFuture(groupSpecs.keySet());
        ListConsumerGroupOffsetsHandler handler =
            new ListConsumerGroupOffsetsHandler(groupSpecs, options.requireStable(), logContext);
        invokeDriver(handler, future, options.timeoutMs);
        return new ListConsumerGroupOffsetsResult(future.all());
    }
@Test
    public void testBatchedListConsumerGroupOffsetsWithNoOffsetFetchBatching() throws Exception {
        Cluster cluster = mockCluster(1, 0);
        Time time = new MockTime();
        Map<String, ListConsumerGroupOffsetsSpec> groupSpecs = batchedListConsumerGroupOffsetsSpec();

        ApiVersion offsetFetchV7 = new ApiVersion()
                .setApiKey(ApiKeys.OFFSET_FETCH.id)
                .setMinVersion((short) 0)
                .setMaxVersion((short) 7);

        try (AdminClientUnitTestEnv env = new AdminClientUnitTestEnv(time, cluster, AdminClientConfig.RETRY_BACKOFF_MS_CONFIG, "0")) {
            env.kafkaClient().setNodeApiVersions(NodeApiVersions.create(Collections.singleton(offsetFetchV7)));
            env.kafkaClient().prepareResponse(prepareBatchedFindCoordinatorResponse(Errors.NONE, env.cluster().controller(), groupSpecs.keySet()));
            // Prepare a response to force client to attempt batched request creation that throws
            // NoBatchedOffsetFetchRequestException. This triggers creation of non-batched requests.
            env.kafkaClient().prepareResponse(offsetFetchResponse(Errors.COORDINATOR_NOT_AVAILABLE, Collections.emptyMap()));

            ListConsumerGroupOffsetsResult result = env.adminClient().listConsumerGroupOffsets(groupSpecs);

            // The request handler attempts both FindCoordinator and OffsetFetch requests. This seems
            // ok since we expect this scenario only during upgrades from versions < 3.0.0 where
            // some upgraded brokers could handle batched FindCoordinator while non-upgraded coordinators
            // rejected batched OffsetFetch requests.
            sendFindCoordinatorResponse(env.kafkaClient(), env.cluster().controller());
            sendFindCoordinatorResponse(env.kafkaClient(), env.cluster().controller());
            sendOffsetFetchResponse(env.kafkaClient(), groupSpecs, false, Errors.NONE);
            sendOffsetFetchResponse(env.kafkaClient(), groupSpecs, false, Errors.NONE);

            verifyListOffsetsForMultipleGroups(groupSpecs, result);
        }
    }