public function doAdminLogout()
 {
     // Clear cookies to force logout
     $this->driver->clearCurrentCookies();
     $url = $this->cfg->host . $this->cfg->path . 'administrator/index.php';
     $loginPage = $this->getPageObject('AdminloginPage', true, $url);
     $this->assertTrue(is_a($loginPage, 'AdminloginPage'));
     return $loginPage;
 }