public HttpClientRequestContext convert(Request request, Site site, Proxy proxy) {
        HttpClientRequestContext httpClientRequestContext = new HttpClientRequestContext();
        httpClientRequestContext.setHttpUriRequest(convertHttpUriRequest(request, site, proxy));
        httpClientRequestContext.setHttpClientContext(convertHttpClientContext(request, site, proxy));
        return httpClientRequestContext;
    }
@author code4crafter@gmail.com
        Date: 17/3/18
        Time: 11:28

@since 0.7.0
webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpUriRequestConverter.java