public function amOnAction($action, $params = [])
{
$namespacedAction = $this->actionWithNamespace($action);
$domain = $this->app['routes']->getByAction($namespacedAction)->domain();
$absolute = !is_null($domain);
$url = $this->app['url']->action($action, $params, $absolute);
$this->amOnPage($url);
}