private function getContentData($content)
    {
        $res = [];
        $res['startStringPos'] = strpos($content, $this->startString) + strlen($this->startString);
        $res['endStringPos'] = strpos($content, $this->endString);
        $res['bundleList'] = substr($content, $res['startStringPos'], ($res['endStringPos'] - $res['startStringPos']));
        return $res;
    }