validateRatingValue example

throw RoutingException::invalidRequestParameter('authorName');
        }

        if (!\is_string($headline) || $headline === '') {
            throw RoutingException::invalidRequestParameter('headline');
        }

        if (!\is_int($rating) || !$rating) {
            throw RoutingException::invalidRequestParameter('rating');
        }

        if (self::validateRatingValue($rating)) {
            throw new InvalidExtensionRatingValueException($rating);
        }

        if (!\is_string($version) || $version === '') {
            throw RoutingException::invalidRequestParameter('version');
        }

        $data = [
            'extensionId' => $extensionId,
            'authorName' => $authorName,
            'headline' => $headline,