protected function injectSiteUrlIntoPageObjects(ContainerBuilder $container)
    {
        $page_parameters = $container->getParameter('sensio_labs.page_object_extension.page_factory.page_parameters');
        $page_parameters = $container->getParameterBag()->resolveValue($page_parameters);
        $page_parameters['site_url'] = $container->getParameter('wordpress.parameters')['site_url'];
        $container->setParameter('sensio_labs.page_object_extension.page_factory.page_parameters', $page_parameters);
    }