public function populate($countryCode)
    {
        $countryCode = strtoupper($countryCode);
        $downloadedFilePath = $this->downloadFile($countryCode);
        $extractedPath = $this->extractFile($downloadedFilePath);

        $rootLocation = $this
            ->loadLocationsFrom(
                $countryCode,
                $extractedPath
            );

        return $rootLocation;
    }