Alcohol\ISO3166\ISO3166::getByAlpha3 PHP 메소드

    public function getByAlpha3($alpha3)
    {
        if (!preg_match('/^[a-zA-Z]{3}$/', $alpha3)) {
            throw new \DomainException('Not a valid alpha3: ' . $alpha3);
        }
        return $this->get($alpha3);
    }