getPriceMapping example

        $prices = [];
        $customerGroups = $this->identifierSelector->getCustomerGroupKeys();
        $currencies = $this->identifierSelector->getShopCurrencyIds($shop->getId());
        if (!$shop->isMain()) {
            $currencies = $this->identifierSelector->getShopCurrencyIds($shop->getParentId());
        }

        foreach ($currencies as $currency) {
            foreach ($customerGroups as $customerGroup) {
                $key = $customerGroup . '_' . $currency;
                $prices[$key] = $this->getPriceMapping();
            }
        }

        return ['properties' => $prices];
    }

    /** * @return array<array<string, mixed>> */
    private function getPriceMapping(): array
    {