src/Common/Message/AbstractRequest.php
public function setCard($value)
    {
        if ($value && !$value instanceof CreditCard) {
            $value = new CreditCard($value);
        }

        return $this->setParameter('card', $value);
    }
public function setCard($value)
    {
        if ($value && !$value instanceof CreditCard) {
            $value = new CreditCard($value);
        }

        return $this->setParameter('card', $value);
    }
Sets the card.

@param CreditCard $value
@return $this