vendor/omnipay/common/src/Omnipay.php

<?php
namespace Omnipay;
 
use Omnipay\Common\GatewayFactory;
use Omnipay\Common\Http\ClientInterface;
 
class Omnipay
{
 
    private static $factory;
 
    public static function getFactory()
    {
        if (is_null(self::$factory)) {
            self::$factory = new GatewayFactory;
        }
 
        return self::$factory;
    }
 
    public static function setFactory(GatewayFactory $factory = null)
    {
        self::$factory = $factory;
    }
 
    public static function __callStatic($method, $parameters)
    {
        $factory = self::getFactory();
 
        return call_user_func_array(array($factory, $method), $parameters);
    }
}