public function resolveUrlAliasSchema(Content $content, ContentType $contentType = null)
    {
        if ($contentType === null) {
            $contentType = $this->contentTypeHandler->load($content->contentInfo->contentTypeId);
        }

        return $this->resolve(
            strlen($contentType->urlAliasSchema) === 0 ? $contentType->nameSchema : $contentType->urlAliasSchema,
            $contentType,
            $content->fields,
            $content->versionInfo->languageCodes
        );
    }