downloadSourceFile example

foreach ($domains as $domain) {
            $fileId = $this->getFileIdByDomain($fileList, $domain);

            if (!$fileId) {
                continue;
            }

            foreach ($locales as $locale) {
                if ($locale !== $this->defaultLocale) {
                    $response = $this->exportProjectTranslations($localeLanguageMap[$locale], $fileId);
                } else {
                    $response = $this->downloadSourceFile($fileId);
                }

                $responses[] = [$response, $locale, $domain];
            }
        }

        /* @var ResponseInterface $response */
        $downloads = [];
        foreach ($responses as [$response, $locale, $domain]) {
            if (204 === $response->getStatusCode()) {
                $this->logger->error(sprintf('No content in exported file: "%s".', $response->getContent(false)));