ForkCMS\Bundle\InstallerBundle\Controller\InstallerController::getInstallationData PHP Method

    protected function getInstallationData(Request $request)
    {
        if (!$request->getSession()->has('installation_data')) {
            $request->getSession()->set('installation_data', new InstallationData());
        }
        return $request->getSession()->get('installation_data');
    }