protected function processTags($comment)
    {
        $tags = preg_split('/^\s*@/m',$comment,-1,PREG_SPLIT_NO_EMPTY);
        foreach($tags as $tag){
            $segs   = preg_split('/\s+/',trim($tag),2);
            $tagName= $segs[0];
            $param  = isset($segs[1]) ? trim($segs[1]) : '';
            $this->tags[$tagName][] = $param;
        }
    }