private function getFile($filenameWithPath)
    {
        $explodedString = explode('\\', $filenameWithPath);
        header('Content-Type: application/pdf');
        header('Content-Disposition: inline; filename="' . $explodedString[count($explodedString) - 1] . '"');
        readfile(ROOT . $filenameWithPath);
        exit; // $this->autoRender = false; is not enough!
    }