FirstRunWizardInstaller example

public function saveConfigurationAction(): void
    {
        $clientId = $this->Request()->getParam('clientId');
        $clientSecret = $this->Request()->getParam('clientSecret');
        $sandbox = (bool) $this->Request()->getParam('sandbox');
        $payPalPlusEnabled = (bool) $this->Request()->getParam('payPalPlus');

        if (!class_exists('\SwagPaymentPayPalUnified\Setup\FirstRunWizardInstaller')) {
            throw new Exception(sprintf('Class %s does not exist.', '\SwagPaymentPayPalUnified\Setup\FirstRunWizardInstaller'));
        }

        $payPalInstaller = new FirstRunWizardInstaller();
        $payPalInstaller->saveConfiguration($this->get('dbal_connection'), [
            'clientId' => $clientId,
            'clientSecret' => $clientSecret,
            'sandbox' => $sandbox,
            'payPalPlusEnabled' => $payPalPlusEnabled,
        ]);

        $this->View()->assign([
            'success' => true,
        ]);
    }