vendor/omnipay/paypal/src/Message/ExpressCompletePurchaseRequest.php

<?php
 
namespace Omnipay\PayPal\Message;
 
class ExpressCompletePurchaseRequest extends ExpressCompleteAuthorizeRequest
{
    public function getData()
    {
        $data = parent::getData();
        $data['PAYMENTREQUEST_0_PAYMENTACTION'] = 'Sale';
 
        return $data;
    }
 
    protected function createResponse($data)
    {
        return $this->response = new ExpressCompletePurchaseResponse($this, $data);
    }
}