getReferencePriceDefinition example

$config
            );
            $tax->setTax($total);
            $tax->setPrice($tax->getPrice() * $definition->getQuantity());
        }

        $price = $this->round(
            $unitPrice * $definition->getQuantity(),
            $config
        );

        $reference = $this->calculateReferencePrice($unitPrice, $definition->getReferencePriceDefinition(), $config);

        return new CalculatedPrice(
            $unitPrice,
            $price,
            $calculatedTaxes,
            $taxRules,
            $definition->getQuantity(),
            $reference,
            $this->calculateListPrice($unitPrice, $definition, $config),
            $this->calculateRegulationPrice($definition, $config)
        );
    }

$tax->setTax($total);

            $tax->setPrice($tax->getPrice() * $definition->getQuantity());
        }

        $price = $this->priceRounding->cashRound(
            $unitPrice * $definition->getQuantity(),
            $config
        );

        $reference = $this->calculateReferencePrice($unitPrice, $definition->getReferencePriceDefinition(), $config);

        return new CalculatedPrice(
            $unitPrice,
            $price,
            $unitTaxes,
            $definition->getTaxRules(),
            $definition->getQuantity(),
            $reference,
            $this->calculateListPrice($unitPrice, $definition, $config),
            $this->calculateRegulationPrice($definition, $config)
        );
    }

        ]);

        $cart = $this->getProductCart();
        $lineItem = $cart->get($this->ids->get('product'));

        static::assertInstanceOf(LineItem::class, $lineItem);
        static::assertInstanceOf(QuantityPriceDefinition::class, $lineItem->getPriceDefinition());

        /** @var QuantityPriceDefinition $priceDefinition */
        $priceDefinition = $lineItem->getPriceDefinition();
        static::assertNull($priceDefinition->getReferencePriceDefinition());

        static::assertInstanceOf(CalculatedPrice::class, $lineItem->getPrice());
        static::assertNull($lineItem->getPrice()->getReferencePrice());
    }

    /** * @dataProvider advancedPricingProvider */
    public function testAdvancedPricing(bool $valid, float $price): void
    {
        $ids = new IdsCollection();