getMatchingPriceOfRule example

if (!$data->has($key)) {
            throw ShippingException::shippingMethodNotFound($delivery->getShippingMethod()->getId());
        }

        /** @var ShippingMethodEntity $shippingMethod */
        $shippingMethod = $data->get($key);

        foreach ($context->getRuleIds() as $ruleId) {
            /** @var ShippingMethodPriceCollection $shippingPrices */
            $shippingPrices = $shippingMethod->getPrices()->filterByProperty('ruleId', $ruleId);

            $costs = $this->getMatchingPriceOfRule($delivery, $context, $shippingPrices);
            if ($costs !== null) {
                break;
            }
        }

        // Fetch default price if no rule matched         if ($costs === null) {
            /** @var ShippingMethodPriceCollection $shippingPrices */
            $shippingPrices = $shippingMethod->getPrices()->filterByProperty('ruleId', null);
            $costs = $this->getMatchingPriceOfRule($delivery, $context, $shippingPrices);
        }