code: public BufferedImage getPreparedImage (String rset, String path)
      {
          return getPreparedImage(rset, path, null);
      }
docs: Loads (and caches) the specified image from the resource manager, obtaining the image from
  the supplied resource set.
  
  <p> Additionally the image is optimized for display in the current graphics
  configuration. Consider using {@link #getMirage(ImageKey)} instead of prepared images as
  they (some day) will automatically use volatile images to increase performance.