return this;
BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);  bi.setRGB( childMinX, childMinY, width, height, getData(parentX, parentY, width, height, null), 0, 0);  DataBuffer db = bi.getRaster().getDataBuffer();  Raster r = Raster.createRaster( bi.getSampleModel(), db, new Point(childMinX, childMinY));  return r;
   public Raster createChild(      int parentX,      int parentY,      int width,      int height,      int childMinX,      int childMinY,      int[] bandlist)   {      return this;   }