laravel-nami-api/src/Region.php

<?php

namespace Zoomyboy\LaravelNami;

use Illuminate\Database\Eloquent\Model;

class Region extends Model implements Nullable
{
    protected $guarded = [];

    public static function getNullValue()
    {
        return 23;
    }

    public static function fromNami($item)
    {
        return new self([
            'id' => $item['id'],
            'name' => preg_replace('/\s*\(.*?\)/', '', $item['descriptor']),
        ]);
    }

    public function getIsNullAttribute()
    {
        return $this->id == self::getNullValue();
    }
}