PHPDaemon\Core\ClassFinder::getClassBasename PHP Method

    public static function getClassBasename($class)
    {
        if (is_object($class)) {
            $class = get_class($class);
        }
        $e = explode('\\', $class);
        return end($e);
    }

 public function getCallbackURL()
 {
     $params = ['agent' => ClassFinder::getClassBasename($this)];
     if (isset($_GET['external_token'])) {
         $params['external_token'] = Request::getString($_GET['external_token']);
     }
     if (isset($this->backUrl)) {
         $params['backurl'] = $this->backUrl;
     }
     return $this->req->getBaseUrl() . '/component/Account/ExternalAuthRedirect/json?' . http_build_query($params);
 }