adrema/app/Initialize/InitializeRegions.php

<?php

namespace App\Initialize;

use DB;
use Zoomyboy\LaravelNami\Api;

class InitializeRegions
{
    private Api $api;
    private string $nullName = 'Nicht-DE';

    public function __construct(Api $api)
    {
        $this->api = $api;
    }

    public function handle(): void
    {
        $this->api->regions()->each(function ($region) {
            \App\Region::create(['nami_id' => $region->id, 'name' => $region->name, 'is_null' => $region->name == $this->nullName]);
        });
    }

    public function restore(): void
    {
        DB::table('regions')->delete();
    }
}