code: public void addImage(int id, Media media)
      {
          final Integer key = Integer.valueOf(id);
          surfaces.put(key, Drawable.loadImage(media));
          if (surfaceId == null)
          {
              surfaceId = key;
          }
      }
docs: Add a cursor image. Once there are no more images to add, a call to {@link #load()} will be necessary.
  
  @param id The cursor id.
  @param media The cursor media.
  @throws LionEngineException If invalid media.