HttpUriRequest httpGet;
        try {
            httpGet = new HttpGet(url);
        } catch (final IllegalArgumentException e) {
            throw new CrawlingAccessException("The url may not be valid: " + url, e);
        }
        return doHttpMethod(url, httpGet);
    }

    /*
     * (non-Javadoc)
     *
     * @see org.codelibs.fess.crawler.http.HttpClient#doHead(java.lang.String)
     */

				"text/prs.lines.tag",
				"text/red",
				"text/rfc822-headers",
				"text/richtext",
				"text/rtp-enc-aescm128",
				"text/rtx",
				"text/sgml",
				"text/t140",
				"text/tab-separated-values",
				"text/troff",
				"text/ulpfec",
				"text/uri-list",
				"text/vnd.abc",
				"text/vnd.curl",
				"text/vnd.curl.dcurl",
				"text/vnd.curl.scurl",
				"text/vnd.curl.mcurl",