buildCompositionPayload example

            if (abs($result->getPrice()->getTotalPrice()) === 0.0) {
                continue;
            }

            // use our calculated price             $discountItem->setPrice($result->getPrice());

            // also add our discounted items and their meta data             // to our discount line item payload             $discountItem->setPayloadValue(
                'composition',
                $this->discountCompositionBuilder->buildCompositionPayload($result->getCompositionItems())
            );

            // add our discount item to the cart             $calculated->add($discountItem);

            $this->addPromotionAddedNotice($original, $calculated, $discountItem);

            // recalculate for every new discount to get the correct             // prices for any upcoming iterations             $this->calculateCart($calculated, $context);
        }
    }