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/UncontendedRegisterAnalyzeAction.java
Strings.format(
                                        "uncontended register operation failed: expected [%d] but observed [%d]",
                                        request.getExpectedValue(),
                                        witness
                                    )
                                );
                            }
                            return null;
                        });
                    }
                    @Override
                    public void onFailure(Exception e) {
                        if (e instanceof UnsupportedOperationException) {
                            
                            listener.onResponse(null);
                        } else {
                            listener.onFailure(e);
                        }
                    }
                }
            );
        }
    }
    public static class Request extends ActionRequest {
        private final String repositoryName;
        private final String containerPath;
        private final String registerName;
        private final long expectedValue;
        public Request(String repositoryName, String containerPath, String registerName, long expectedValue) {
            this.repositoryName = repositoryName;