class DownloadListener1 implements DownloadListener,
        Listener1Assist.Listener1Callback, ListenerAssist {

    @Override
    public void downloadFromBreakpoint(@NonNull DownloadTask task, @NonNull BreakpointInfo info) {
        assist.downloadFromBreakpoint(task, info);
    }

      DownloadListener1(Listener1Assist assist);
    public  DownloadListener1();

}