ShipmentImport::getShipmentItem

static function getShipmentItem(SaleShipment $shipment, SaleBasketItem $basketItem)
    {
        /** @var SaleShipmentItemCollection $shipmentItemCollection */
        if (!$shipmentItemCollection = $shipment->getShipmentItemCollection())
        {
            throw new MainObjectNotFoundException('Entity "ShipmentItemCollection" not found');
        }

        $shipmentItem = $shipmentItemCollection->getItemByBasketCode($basketItem->getBasketCode());
        if (empty($shipmentItem))
        {
            $shipmentItem = $shipmentItemCollection->createItem($basketItem);
        }
        return $shipmentItem;
    }