class DownloadListener1 implements DownloadListener,
        Listener1Assist.Listener1Callback, ListenerAssist {

    @Override public void setAlwaysRecoverAssistModel(boolean isAlwaysRecoverAssistModel) {
        assist.setAlwaysRecoverAssistModel(isAlwaysRecoverAssistModel);
    }

      DownloadListener1(Listener1Assist assist);
    public  DownloadListener1();

}