code: public function creditCard($cardNumber, $cardCvv, $expirationMonth, $expirationYear, $holderName)
      {
          return $this->setCard(
              $cardNumber,
              $cardCvv,
              $expirationMonth,
              $expirationYear,
              $holderName,
              Transaction::CREDIT
          );
      }
docs: @param $cardNumber
  @param $cardCvv
  @param $expirationYear
  @param $expirationMonth
  @param $holderName
  
  @return Transaction this transaction