}
    }

    private HttpClientResponse performRawHead(String source, boolean revalidate) {
        return performRequest(new HttpHead(source), revalidate);
    }

    public HttpClientResponse performHead(String source, boolean revalidate) {
        return processResponse(performRawHead(source, revalidate));
    }

    HttpClientResponse performRawGet(String source, boolean revalidate) {