RegulationPrice example

private function calculateRegulationPrice(QuantityPriceDefinition $definition, CashRoundingConfig $config): ?RegulationPrice
    {
        $regulationPrice = $definition->getRegulationPrice();
        if (!$regulationPrice) {
            return null;
        }

        if (!$definition->isCalculated()) {
            $regulationPrice = $this->round($regulationPrice, $config);
        }

        return new RegulationPrice($regulationPrice);
    }

    private function calculateReferencePrice(float $price, ?ReferencePriceDefinition $definition, CashRoundingConfig $config): ?ReferencePrice
    {
        if (!$definition) {
            return null;
        }

        if ($definition->getPurchaseUnit() <= 0 || $definition->getReferenceUnit() <= 0) {
            return null;
        }

        

    public static function regulationPriceCalculationProvider(): \Generator
    {
        yield 'test calculation without reference price' => [
            null,
            null,
        ];

        yield 'test calculation with reference price' => [
            100,
            new RegulationPrice(100),
        ];
    }
}

    public static function regulationPriceCalculationProvider(): \Generator
    {
        yield 'test calculation without reference price' => [
            null,
            null,
        ];

        yield 'test calculation with reference price' => [
            100,
            new RegulationPrice(100),
        ];
    }
}

        if (!$definition->isCalculated()) {
            $price = $this->taxCalculator->calculateGross(
                $price,
                $definition->getTaxRules()
            );
        }

        $regulationPrice = $this->priceRounding->cashRound($price, $config);

        return new RegulationPrice($regulationPrice);
    }

    private function calculateReferencePrice(float $price, ?ReferencePriceDefinition $definition, CashRoundingConfig $config): ?ReferencePrice
    {
        if (!$definition) {
            return null;
        }

        if ($definition->getPurchaseUnit() <= 0 || $definition->getReferenceUnit() <= 0) {
            return null;
        }