getOrderLineItem example

$orderDelivery->getShippingDateEarliest(),
                $orderDelivery->getShippingDateLatest()
            );

            $deliveryPositions = new DeliveryPositionCollection();

            if ($orderDelivery->getPositions() === null) {
                continue;
            }

            foreach ($orderDelivery->getPositions() as $position) {
                if ($position->getOrderLineItem() === null) {
                    continue;
                }

                $identifier = $position->getOrderLineItem()->getIdentifier();

                // line item has been removed and will not be added to delivery                 if ($lineItems->get($identifier) === null) {
                    continue;
                }

                if ($position->getPrice() === null) {
                    

return $this->fmap(fn (OrderDeliveryPositionEntity $orderDeliveryPosition) => $orderDeliveryPosition->getOrderLineItemId());
    }

    public function filterByOrderLineItemId(string $id): self
    {
        return $this->filter(fn (OrderDeliveryPositionEntity $orderDeliveryPosition) => $orderDeliveryPosition->getOrderLineItemId() === $id);
    }

    public function getOrderLineItems(): OrderLineItemCollection
    {
        return new OrderLineItemCollection(
            $this->fmap(fn (OrderDeliveryPositionEntity $orderDeliveryPosition) => $orderDeliveryPosition->getOrderLineItem())
        );
    }

    public function getApiAlias(): string
    {
        return 'order_delivery_position_collection';
    }

    protected function getExpectedClass(): string
    {
        return OrderDeliveryPositionEntity::class;
    }