HDC Task extends AutoCloseable for easy usages

    Task task1;
    try {
        task1 = HDC.getCurrentTask().startSubtask("task1");
        // do something...
    } finally {
        task1.stop();
    }

    try (Task task1 = HDC.getCurrentTask().startSubtask("task1")) {
        task1 = HDC.getCurrentTask().startSubtask("task1");
        // do something...
    }