public function addSubController($pTriggerUrl, $pControllerClass = '')
    {
        $this->normalizeUrl($pTriggerUrl);

        $base = $this->triggerUrl;
        if ($base == '/') $base = '';

        $controller = new Server($base . $pTriggerUrl, $pControllerClass, $this);

        $this->controllers[] = $controller;

        return $controller;
    }