Devise\Pages\PagesRepository::findWithVersion PHP Method

    public function findWithVersion($id, $versionName = null, $editing = false)
    {
        $page = $this->Page->findOrFail($id);
        // if the user is an admin user they can view any page
        // using the ?page_version query parameter otherwise
        // they just get the live version
        $page->version = $editing && $versionName !== null ? $this->getPageVersionByName($page, $versionName) : $this->getLivePageVersion($page);
        if (!$page->version) {
            throw new PageNotFoundException('Page not found!');
        }
        $page = $this->wrapFieldsAroundPage($page, $page->version);
        return $page;
    }