private function getFilesContainingOldKey()
    {
        $affectedFiles = [];

        foreach ($this->manager->getAllViewFilesWithTranslations() as $file => $keys) {
            foreach ($keys as $key) {
                if ($key == $this->argument('oldKey')) {
                    $affectedFiles[$file][] = $key;
                }
            }
        }

        return $affectedFiles;
    }