lib 1400188 // image4j (https://sourceforge.net/projects/image4j/files/image4j-core/0.7.2/)

import net.sf.image4j.codec.ico.ICOEncoder;

static File saveICO(File f, BufferedImage img) ctex {
  ICOEncoder.write(img, f);
  ret f;
}

static File saveICO(BufferedImage img, File f) {
  ret saveICO(f, img);
}