Actions `cluster:admin/repository/analyze/blob` and `cluster:admin/repository/analyze/register` and so on are only invoked via the transport service, they do not need to register as client actions so we can drop the `ActionType` instance. Instead the root `RepositoryAnalyzeAction` should create and register all these transport actions itself. But even the root `RepositoryAnalyzeAction` should not be an `ActionType` derivative, we should just declare an `ActionType` instance directly. Moreover we can use `ActionType#localOnly` since the client action does not run on remote clusters.
x-pack/plugin/snapshot-repo-test-kit/src/main/java/org/elasticsearch/repositories/blobstore/testkit/GetBlobChecksumAction.java
private static final Logger logger = GetBlobChecksumAction.logger;
        private static final int BUFFER_SIZE = ByteSizeUnit.KB.toIntBytes(8);
        private final RepositoriesService repositoriesService;
        @Inject
        public TransportAction(TransportService transportService, ActionFilters actionFilters, RepositoriesService repositoriesService) {
            super(
                NAME,
                transportService,
                actionFilters,
                Request::new,
                transportService.getThreadPool().executor(ThreadPool.Names.SNAPSHOT)
            );
            this.repositoriesService = repositoriesService;
        }
        @Override
        protected void doExecute(Task task, Request request, ActionListener<Response> listener) {
            assert task instanceof CancellableTask;
            CancellableTask cancellableTask = (CancellableTask) task;
            final Repository repository = repositoriesService.repository(request.getRepositoryName());
            if (repository instanceof BlobStoreRepository == false) {
                throw new IllegalArgumentException("repository [" + request.getRepositoryName() + "] is not a blob store repository");
            }
            final BlobStoreRepository blobStoreRepository = (BlobStoreRepository) repository;
            final BlobContainer blobContainer = blobStoreRepository.blobStore()
                .blobContainer(blobStoreRepository.basePath().add(request.getBlobPath()));
            logger.trace("handling [{}]", request);
            final InputStream rawInputStream;