Omnipay\Common\CreditCard::setBillingTitle PHP 메소드

    public function setBillingTitle($value)
    {
        return $this->setParameter('billingTitle', $value);
    }

 public function testBillingTitle()
 {
     $this->card->setBillingTitle('Mrs.');
     $this->assertEquals('Mrs.', $this->card->getBillingTitle());
     $this->assertEquals('Mrs.', $this->card->getTitle());
 }