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/RepositoryAnalyzeAction.java
throw new IllegalStateException(
                    "cannot send abortWritePermitted request on transport version [" + out.getTransportVersion() + "]"
                );
            }
        }
        @Override
        public Task createTask(long id, String type, String action, TaskId parentTaskId, Map<String, String> headers) {
            return new CancellableTask(id, type, action, getDescription(), parentTaskId, headers);
        }
        public void blobCount(int blobCount) {
            if (blobCount <= 0) {
                throw new IllegalArgumentException("blobCount must be >0, but was [" + blobCount + "]");
            }
            if (blobCount > 100000) {
                
                throw new IllegalArgumentException("blobCount must be <= 100000, but was [" + blobCount + "]");
            }
            this.blobCount = blobCount;
        }
        public void concurrency(int concurrency) {
            if (concurrency <= 0) {
                throw new IllegalArgumentException("concurrency must be >0, but was [" + concurrency + "]");
            }
            this.concurrency = concurrency;
        }
        public void seed(long seed) {
            this.seed = seed;
        }
        public void timeout(TimeValue timeout) {
            this.timeout = timeout;