Thread.sleep(2000);
        assertEquals(count, expiredCount);
        assertEquals(1, TimeoutManager.getInstance().getTimeoutTaskCount());
        task.cancel();
        Thread.sleep(2000);
        assertEquals(0, TimeoutManager.getInstance().getTimeoutTaskCount());
        assertNull(TimeoutManager.getInstance().thread);
    }

        return task;
    }

    /**
     * Returns the number of managed {@link TimeoutTask}.
     *
     * @return the number of managed {@link TimeoutTask}
     */
    public synchronized int getTimeoutTaskCount() {
        return timeoutTaskList.size();
    }

    @Override
    public void run() {
        int nThreads = Runtime.getRuntime().availableProcessors() / 2;