@Override public void updateWorkflows(MetadataServicePb.UpdateWorkflowsRequest req, StreamObserver<MetadataServicePb.UpdateWorkflowsResponse> response) { List<WorkflowDef> workflows = req.getDefsList().stream() .map(PROTO_MAPPER::fromProto).collect(Collectors.toList()); service.updateWorkflowDef(workflows); response.onNext(MetadataServicePb.UpdateWorkflowsResponse.getDefaultInstance()); response.onCompleted(); }