Custom LanguageSeederService class

<?php

namespace App\Services\Seeders;

use App\Services\LanguageService;
use GuzzleHttp\Client;
use GuzzleHttp\Exception\GuzzleException;
use Illuminate\Support\Collection;
use Psr\Http\Message\ResponseInterface;

/**
 * Class LanguageSeederService
 * @package App\Services\Seeders
 */
class LanguageSeederService extends SeederService
{

    /**
     * Seeding process runner
     * @throws GuzzleException
     */
    public function process(): void
    {
        /** @var LanguageService $languageService */
        $languageService = resolve(LanguageService::class);
        $this->getLanguages()
            ->each(function ($language, $key) use ($languageService) {
                $languageService->getBuilder()
                    ->firstOrCreate([
                        'code' => $key,
                        'title' => $language
                    ]);
            });
    }

    /**
     * @return Collection
     * @throws GuzzleException
     */
    private function getLanguages(): Collection
    {
        $languages = collect();
        $countries = collect($this->prepareClient());

        $countries->each(function ($country) use (&$languages) {
            collect($country['languages'])
                ->each(function ($languageDetails) use (&$languages) {
                    $languageCode = $languageDetails['iso639_1'] ?? $languageDetails['iso639_2'];
                    $nativeName = trim($languageDetails['nativeName']);

                    if (!$languages->has($languageCode)) $languages->put($languageCode, $nativeName);
                });
        });

        return $languages;
    }

    /**
     * Returns a list of countries
     *
     * @return array
     * @throws GuzzleException
     */
    private function prepareClient()
    {
        $url = 'https://restcountries.eu/rest/v2/all';
        $httpClient = new Client(['verify' => false]);

        return $this->parseResponse($httpClient->get($url));
    }

    /**
     * @param ResponseInterface $response
     * @return mixed
     */
    private function parseResponse(ResponseInterface $response)
    {
        return json_decode($response->getBody()->getContents(), true);
    }
}