Payum\Paypal\ProHosted\Nvp\PaypalProHostedGatewayFactory::populateConfig PHP Method

    protected function populateConfig(ArrayObject $config)
    {
        $config->defaults(['payum.factory_name' => 'paypal_pro_hosted', 'payum.factory_title' => 'Paypal Pro Hosted', 'payum.action.capture' => new CaptureAction(), 'payum.action.notify' => new NotifyAction(), 'payum.action.status' => new StatusAction(), 'payum.action.sync' => new SyncAction(), 'payum.action.convert_payment' => new ConvertPaymentAction(), 'payum.action.api.get_transaction_details' => new GetTransactionDetailsAction(), 'payum.action.api.create_button_payment' => new CreateButtonPaymentAction()]);
        if (false == $config['payum.api']) {
            $config['payum.default_options'] = ['username' => '', 'password' => '', 'signature' => '', 'business' => '', 'sandbox' => true];
            $config->defaults($config['payum.default_options']);
            $config['payum.required_options'] = ['username', 'password', 'signature'];
            $config['payum.api'] = function (ArrayObject $config) {
                $config->validateNotEmpty($config['payum.required_options']);
                $paypalConfig = array('username' => $config['username'], 'password' => $config['password'], 'signature' => $config['signature'], 'business' => $config['business'], 'sandbox' => $config['sandbox']);
                return new Api($paypalConfig, $config['payum.http_client'], $config['httplug.message_factory']);
            };
        }
    }