anchor.diff:              orderBy: 'createdTime desc', q: "'0B2t1uXRrSZ4SMnA5SWFDWHd0WGs' in parents", pageSize: pageSize).then((
               list) {
               window.console.log('0B2t1uXRrSZ4SMnA5SWFDWHd0WGs');
  -            files.addAll(toFileList(list.files, true));
  +            files.addAll(toFileList(list.files, true, 'images/private-16.png'));
   
               files.sort((a, b) => b.timestamp.compareTo(a.timestamp));
               removeDocument();
  
positive.code:   DivElement div = new DivElement();
    if (file.isHidden) {
      div.setAttribute('class', 'link hidden');
      ImageElement img = new ImageElement(src: 'images/private-16.png');
      img.setAttribute('class', 'private');
      div.append(img);
    } else {
  
negative.code:         api.files.list(orderBy: 'createdTime desc', q: "'0B7gIZmKENAt5ejZKOFR0b2hQVU0' in parents", pageSize: pageSize)
            .then((list) {
            window.console.log('0B7gIZmKENAt5ejZKOFR0b2hQVU0');
            files.addAll(toFileList(list.files, true, 'images/private-16.png'));
  
            files.sort((a, b) => b.timestamp.compareTo(a.timestamp));
            removeDocument();
  