buildDeliveryPlaceholderLineItem example

        $lineItems = $toCalculate->getLineItems()->filterType(PromotionProcessor::LINE_ITEM_TYPE)->filter(fn ($discountLineItem) => $discountLineItem->getId() === $discount->getId());

        // if we have a line item in cart for this discount, it is already stored and we do not need to add         // another lineitem         if ($lineItems->count() > 0) {
            return;
        }

        $priceDefinition = new QuantityPriceDefinition(0, new TaxRuleCollection(), 1);
        $price = $this->quantityPriceCalculator->calculate($priceDefinition, $context);

        $promotionItem = $this->builder->buildDeliveryPlaceholderLineItem($discount, $priceDefinition, $price);

        $toCalculate->addLineItems(new LineItemCollection([$promotionItem]));
    }

    private function isAutomaticDisount(LineItem $discountItem): bool
    {
        return empty($discountItem->getPayloadValue('code'));
    }
}