private function importSingleBundleTranslationFiles(ImportCommand $importCommand)
    {
        $this->validateBundleName($importCommand->getDefaultBundle());
        $bundles = array_change_key_case($this->kernel->getBundles(), CASE_LOWER);
        $finder = $this->translationFileExplorer->find($bundles[strtolower($importCommand->getDefaultBundle())]->getPath(), $this->determineLocalesToImport($importCommand));

        if ($finder === null) {
            return 0;
        }

        return $this->importTranslationFiles($finder, $importCommand->getForce());
    }