@Override
        public void onBeforeDownload(CefBrowser browser,
                                     CefDownloadItem downloadItem,
                                     String suggestedName,
                                     CefBeforeDownloadCallback callback) {
          myDownloadHandler.handleAll(browser, handler -> {
            handler.onBeforeDownload(browser, downloadItem, suggestedName, callback);
          });
        }
@Override
        public void onBeforeDownload(CefBrowser browser,
                                     CefDownloadItem downloadItem,
                                     String suggestedName,
                                     CefBeforeDownloadCallback callback)