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 final String repositoryName;
        private final String blobPath;
        private final String blobName;
        
        private final long rangeStart;
        private final long rangeEnd;
        Request(StreamInput in) throws IOException {
            super(in);
            repositoryName = in.readString();
            blobPath = in.readString();
            blobName = in.readString();
            rangeStart = in.readVLong();
            rangeEnd = in.readVLong();
        }
        @Override
        public ActionRequestValidationException validate() {
            return null;
        }
        Request(String repositoryName, String blobPath, String blobName, long rangeStart, long rangeEnd) {
            assert rangeStart == 0L && rangeEnd == 0L || 0L <= rangeStart && rangeStart < rangeEnd : rangeStart + "-" + rangeEnd;
            this.repositoryName = repositoryName;
            this.blobPath = blobPath;
            this.blobName = blobName;
            this.rangeStart = rangeStart;
            this.rangeEnd = rangeEnd;
        }
        public String getRepositoryName() {
            return repositoryName;
        }