Mailgun\Resource\Api\Domain\IndexResponse::create PHP Метод

    public static function create(array $data)
    {
        $items = [];
        Assert::keyExists($data, 'total_count');
        Assert::keyExists($data, 'items');
        foreach ($data['items'] as $item) {
            $items[] = Domain::create($item);
        }
        return new self($data['total_count'], $items);
    }