Payum\Paypal\ProCheckout\Nvp\Api::doSale PHP Method

    public function doSale(array $fields)
    {
        $fields['TRXTYPE'] = self::TRXTYPE_SALE;
        $this->addAuthorizeFields($fields);
        $result = $this->doRequest($fields);
        $result['TRXTYPE'] = self::TRXTYPE_SALE;
        return $result;
    }

    /**
     * {@inheritDoc}
     */
    public function execute($request)
    {
        /** @var $request Capture */
        RequestNotSupportedException::assertSupports($this, $request);

        $model = new ArrayObject($request->getModel());

        if (is_numeric($model['RESULT'])) {
            return;
        }

        $cardFields = array('ACCT', 'CVV2', 'EXPDATE');
        if (false == $model->validateNotEmpty($cardFields, false)) {
            try {
                $this->payment->execute($obtainCreditCard = new ObtainCreditCard());

                $card = $obtainCreditCard->obtain();

                $model['EXPDATE'] = new SensitiveValue($card->getExpireAt()->format('my'));
                $model['ACCT'] = new SensitiveValue($card->getNumber());
                $model['CVV2'] = new SensitiveValue($card->getSecurityCode());
            } catch (RequestNotSupportedException $e) {
                throw new LogicException('Credit card details has to be set explicitly or there has to be an action that supports ObtainCreditCard request.');
            }
        }

        $model->replace($this->api->doSale($model->toUnsafeArray()));
    }