* If timeout is not set or is <= 0, returns null.
     *
     * @return the timeout task, or null if no timeout is configured
     */
    protected TimeoutTask createTimeoutTask() {
        if (timeout <= 0) {
            return null;
        }
        return TimeoutManager.getInstance().addTimeoutTarget(() -> {

            super.appendJarFile(cpSeparator, buf, libDir, basePath);
        }

        public TimeoutTask testCreateTimeoutTask() {
            return super.createTimeoutTask();
        }

        public void testCreateSystemProperties(List<String> cmdList, File propFile) {
            super.createSystemProperties(cmdList, propFile);
        }

        if (jobExecutor != null) {
            jobExecutor.addShutdownListener(() -> ComponentUtil.getProcessHelper().destroyProcess(sessionId));
        }

        final TimeoutTask timeoutTask = createTimeoutTask();
        try {
            executePython();
        } catch (final Exception e) {
            logger.warn("Failed to run python command.", e);
            resultBuf.append(e.getMessage()).append("\n");

        if (jobExecutor != null) {
            jobExecutor.addShutdownListener(() -> ComponentUtil.getProcessHelper().destroyProcess(sessionId));
        }

        final TimeoutTask timeoutTask = createTimeoutTask();
        try {
            executeSuggestCreator();
        } catch (final Exception e) {
            logger.warn("Failed to create suggest data.", e);
            resultBuf.append(e.getMessage()).append("\n");

        if (jobExecutor != null) {
            jobExecutor.addShutdownListener(() -> ComponentUtil.getProcessHelper().destroyProcess(sessionId));
        }

        final TimeoutTask timeoutTask = createTimeoutTask();
        try {
            executeThumbnailGenerator();
        } catch (final Exception e) {
            logger.warn("Failed to generate thumbnails.", e);
            resultBuf.append(e.getMessage()).append("\n");

        }

        if (jobExecutor != null) {
            jobExecutor.addShutdownListener(() -> ComponentUtil.getProcessHelper().destroyProcess(sessionId));
        }

        final TimeoutTask timeoutTask = createTimeoutTask();
        try {
            executeCrawler();
            ComponentUtil.getKeyMatchHelper().update();
        } catch (final JobProcessingException e) {
            throw e;