Laravel Timezone model with Sushi

Timezone.php

<!-- This model requires https://github.com/calebporzio/sushi: composer require calebporzio/sushi -->

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Timezone extends Model
{
    use \Sushi\Sushi;

    public function getRows()
    {
        return collect(timezone_identifiers_list())
            ->map(function ($item) {
                return [
                    'identifier' => $item,
                    'string' => '(GMT' . now($item)->format('O') . ') ' . $item . ' (' . now($item)->format('T') . ')',
                ];
            })
            ->toArray();
    }
}