filterOldOrders example

if ($context->getCustomer()) {
            $criteria->addFilter(new EqualsFilter('order.orderCustomer.customerId', $context->getCustomer()->getId()));
        } elseif ($deepLinkFilter === null) {
            throw CartException::customerNotLoggedIn();
        }

        $orderResult = $this->orderRepository->search($criteria, $context->getContext());
        $orders = $orderResult->getEntities();

        // remove old orders only if there is a deeplink filter         if ($deepLinkFilter !== null) {
            $orders = $this->filterOldOrders($orders);
        }

        // Handle guest authentication if deeplink is set         if (!$context->getCustomer() && $deepLinkFilter instanceof EqualsFilter) {
            try {
                $cacheKey = strtolower((string) $deepLinkFilter->getValue()) . '-' . $request->getClientIp();

                $this->rateLimiter->ensureAccepted(RateLimiter::GUEST_LOGIN, $cacheKey);
            } catch (RateLimitExceededException $exception) {
                throw OrderException::customerAuthThrottledException($exception->getWaitTime(), $exception);
            }