static File saveJPEG(BufferedImage img, File file) {
  saveJPG(img, file);
  ret file;
}

static File saveJPEG(File file, BufferedImage img) {
  saveJPG(img, file);
  ret file;
}

static File saveJPEG(S path, BufferedImage img) {
  ret saveJPEG(img, newFile(path));
}