long calendarTime = Calendar.getInstance().getTimeInMillis();
        LocalDateTime currentTime = LocalDateTime.ofInstant(Instant.ofEpochMilli(calendarTime), ZoneId.systemDefault());
        try {
            if (orderSystem.getOrders().size() > 0) {
                orderSystem.getOrders().stream()
                        .filter(order -> currentTime.isAfter(order.getExpirationDate()))
                        .forEach(order -> {
                            notificationService.popExpiredOrder(order);
                            orderSystem.getOrders().remove(order);
                        });

            }
        } catch (Exception e) {
            e.printStackTrace();
        }