protected SearchResult search(String query, SearchRequestParams params, OptionalThing<FessUserBean> userBean) {
            int start = params.getStartPosition();
            int size = params.getPageSize();
            SearchResultBuilder builder = SearchResult.create();
            for (int i = start; i < start + size && i < allRecordCount; i++) {
                Map<String, Object> doc = new HashMap<>();

    }

    public boolean isRunning() {
        return ComponentUtil.getJobManager().findJobByUniqueOf(LaJobUnique.of(getId())).map(LaScheduledJob::isExecutingNow).orElse(false);
    }

    public void start() {
        ComponentUtil.getJobManager().findJobByUniqueOf(LaJobUnique.of(getId())).ifPresent(job -> {
            job.launchNow();
        }).orElse(() -> {
            throw new JobNotFoundException(this);
        });

                pb.directory(baseDir);
                pb.redirectErrorStream(true);
            });

            final InputStreamThread it = jobProcess.getInputStreamThread();
            it.start();

            final Process currentProcess = jobProcess.getProcess();
            currentProcess.waitFor();
            it.join(5000);

            final int exitValue = currentProcess.exitValue();