class DownloadListener1 implements DownloadListener,
        Listener1Assist.Listener1Callback, ListenerAssist {

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

      DownloadListener1(Listener1Assist assist);
    public  DownloadListener1();

}