return (InputStream) response.getEntity();
    }
    public byte[] getDiagram() {
        WorkflowService service = getService(WorkflowService.class);
        WebClient.client(service).accept(RESTHeaders.MEDIATYPE_IMAGE_PNG);
        Response response = service.exportDiagram(SubjectType.USER);
        byte[] diagram;
        try {
            diagram = IOUtils.readBytesFromStream((InputStream) response.getEntity());
        } catch (Exception e) {