@Deprecated
    protected void onSuccess(Request request, Task task) {
        this.onSuccess(request);
    }
@param request the {@link Request}.
@param task the {@link Task}.
@since 0.7.6
@deprecated Use {@link #onSuccess(Page, Task)} instead.
webmagic-core/src/main/java/us/codecraft/webmagic/downloader/AbstractDownloader.java