TimeoutManager.getInstance().clear();
    }

    /**
     * @throws Exception
     */
    public void testExpired() throws Exception {
        TimeoutTask task = TimeoutManager.getInstance().addTimeoutTarget(new TimeoutTarget() {
            public void expired() {
                System.out.println("expired");
                expiredCount++;
            }
        }, 1, true);

                cb.query().setJobStatus_Equal(Constants.RUNNING);
                cb.query().setTarget_Equal(myName);
            });
        }

        TimeoutManager.getInstance().addTimeoutTarget(() -> {
            if (logger.isDebugEnabled()) {
                logger.debug("Updating scheduled jobs. time:{}", schedulerTime);
            }
            final long now = systemHelper.getCurrentTimeAsLong();

                }
            };
            Runtime.getRuntime().addShutdownHook(shutdownCallback);

            systemMonitorTask = TimeoutManager.getInstance()
                    .addTimeoutTarget(new SystemMonitorTarget(), ComponentUtil.getFessConfig().getThumbnailSystemMonitorIntervalAsInteger(),
                            true);

            final int totalCount = process(options);

     * @param timeout the timeout duration
     * @param permanent whether the task is permanent
     * @return the {@link TimeoutTask}
     */
    public synchronized TimeoutTask addTimeoutTarget(final TimeoutTarget timeoutTarget, final int timeout, final boolean permanent) {
        final TimeoutTask task = new TimeoutTask(timeoutTarget, timeout, permanent);
        timeoutTaskList.addLast(task);
        start();

     *
     * @param file
     *            The file to delete.
     */
    public static void deleteInBackground(final File file) {
        if (file != null) {
            TimeoutManager.getInstance().addTimeoutTarget(() -> {
                try {
                    Files.deleteIfExists(file.toPath());
                } catch (final IOException e) {
                    throw new IORuntimeException(e);
                }