calculatePriceStruct example

ShopContextInterface $context
    ) {
        $tax = $context->getTaxRule($product->getTax()->getId());
        if (!$tax instanceof Tax) {
            throw new StructNotFoundException(Tax::class, $product->getTax()->getId());
        }

        $rules = $product->getPriceRules();

        $prices = [];
        foreach ($rules as $rule) {
            $prices[] = $this->calculatePriceStruct($rule, $tax, $context);
        }

        $product->setPrices($prices);

        $rules = $product->getPriceRules();
        if (!$product->getCheapestPriceRule() && !empty($rules)) {
            $product->setCheapestPriceRule(clone $rules[0]);
        }

        if ($product->getCheapestPriceRule()) {
            /** * Calculation with considering min purchase */