public function toComment($mime)
    {
        $commentStart = "<!--";
        $commentEnd   = "-->";
        switch ($mime) {
            case "text/javascript":
            case "text/css":
            case "application/x-javascript":
                $commentStart = "/**";
                $commentEnd   = "**/";
                break;
            default:
                break;
        }
        $this->returnValue = $commentStart." ".$this->returnValue." ".$commentEnd;
        return $this;
    }