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/BlobAnalyzeAction.java
}
                    };
                    if (atomic) {
                        try {
                            blobContainer.writeBlobAtomic(
                                OperationPurpose.REPOSITORY_ANALYSIS,
                                request.blobName,
                                bytesReference,
                                failIfExists
                            );
                        } catch (BlobWriteAbortedException e) {
                            assert request.getAbortWrite() : "write unexpectedly aborted";
                        }
                    e {
                        blobContainer.writeBlob(OperationPurpose.REPOSITORY_ANALYSIS, request.blobName, bytesReference, failIfExists);
                    }
                e {
                    cancellableThreads.execute(() -> {
                        try {
                            blobContainer.writeBlob(
                                OperationPurpose.REPOSITORY_ANALYSIS,
                                request.blobName,
                                repository.maybeRateLimitSnapshots(
                                    new RandomBlobContentStream(content, request.getTargetLength()),
                                    throttledNanos::addAndGet
                                ),
                                request.targetLength,
                                failIfExists
                            );
                        } catch (IOException e) {