Contao\PageError404::getResponse PHP Method

    public function getResponse()
    {
        /** @var PageModel $objPage */
        global $objPage;
        $obj404 = $this->prepare();
        $objPage = $obj404->loadDetails();
        /** @var PageRegular $objHandler */
        $objHandler = new $GLOBALS['TL_PTY']['regular']();
        return $objHandler->getResponse($objPage)->setStatusCode(404);
    }