Omnipay\Common\CreditCard::setBillingFax PHP Метод

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

 public function testBillingFax()
 {
     $this->card->setBillingFax('54321');
     $this->assertSame('54321', $this->card->getBillingFax());
     $this->assertSame('54321', $this->card->getFax());
 }