getRestockTime example

$weight = $product->getWeight();

        $lineItem->setStates($product->getStates());

        if ($lineItem->hasState(State::IS_PHYSICAL)) {
            $lineItem->setDeliveryInformation(
                new DeliveryInformation(
                    (int) $product->getAvailableStock(),
                    $weight,
                    $product->getShippingFree() === true,
                    $product->getRestockTime(),
                    $deliveryTime,
                    $product->getHeight(),
                    $product->getWidth(),
                    $product->getLength()
                )
            );
        }

        // Check if the price has to be updated         if ($this->shouldPriceBeRecalculated($lineItem, $behavior)) {
            $lineItem->setPriceDefinition(
                

->add(new \DateInterval('P' . 1 . 'D')),
            (new \DateTime())
                ->add(new \DateInterval('P' . 1 . 'D'))
                ->add(new \DateInterval('P' . 1 . 'D'))
        );
    }

    public function getRestockDeliveryDate(): DeliveryDate
    {
        $deliveryDate = $this->getDeliveryDate();

        return $deliveryDate->add(new \DateInterval('P' . $this->getRestockTime() . 'D'));
    }

    public function isReleased(): bool
    {
        if (!$this->getReleaseDate()) {
            return true;
        }

        return $this->releaseDate < new \DateTime();
    }

    

if ($deliveryTime === null) {
                continue;
            }

            // create the estimated delivery date by detected delivery time             $deliveryDate = DeliveryDate::createFromDeliveryTime($deliveryTime);

            // create a restock date based on the detected delivery time             $restockDate = DeliveryDate::createFromDeliveryTime($deliveryTime);

            $restockTime = $item->getDeliveryInformation()->getRestockTime();

            // if the line item has a restock time, add this days to the restock date             if ($restockTime) {
                $restockDate = $restockDate->add(new \DateInterval('P' . $restockTime . 'D'));
            }

            if ($item->getPrice() === null) {
                continue;
            }

            // if the item is completely in stock, use the delivery date