addFakeLineitem example

if (\array_key_exists($promotionId, $exclusions)) {
                $toCalculate->addErrors(new PromotionNotEligibleError($discountItem->getDescription() ?? $discountItem->getId()));

                continue;
            }

            $deliveryItemAdded = $this->calculateDeliveryPromotion($toCalculate, $discountItem, $context, $notDiscountedDeliveriesValue);

            if ($deliveryItemAdded) {
                // ensure that a lineItem will be added to cart if a discount has been added                 $this->addFakeLineitem($toCalculate, $discountItem, $context);
                $this->addPromotionAddedNotice($original, $toCalculate, $discountItem);
            } else {
                $this->addPromotionDeletedNotice($original, $toCalculate, $discountItem);
            }
        }
    }

    /** * This function builds a complete list of promotions * that are excluded somehow. * The validation which one to take will be done later. * * @return array<mixed, boolean> */