@Override
        public void onBeforeContextMenu(CefBrowser browser, CefFrame frame, CefContextMenuParams params, CefMenuModel model) {
          myContextMenuHandler.handleAll(browser, handler -> {
            handler.onBeforeContextMenu(browser, frame, params, model);
          });
        }
@Override
        public void onBeforeContextMenu(CefBrowser browser, CefFrame frame, CefContextMenuParams params, CefMenuModel model)