@Override
  public Uri decorate(SimpleAdapter<Uri> decoratee, int position) {
    final int pos = position % decoratee.getSize();
    final Uri srcUri = decoratee.get(position);
    return Uri.parse(srcUri.toString() + "?param=" + pos);
  }
This decorates a Uri adding a distinct parameter
samples/scrollperf/src/main/java/com/facebook/samples/scrollperf/data/impl/DistinctUriDecorator.java