Method getCouponTitleById

public static function getCouponTitleById($couponId)
{
    $db = Factory::getDBO();
    $query = 'SELECT c.title' . ' FROM #__phocacart_coupons AS c' . ' WHERE c.id = ' . (int) $couponId . ' ORDER BY c.id' . ' LIMIT 1';
    $db->setQuery($query);
    $coupon = $db->loadObject();
    return $coupon;
}