code: func ImageNewFromIconName(iconName string, size IconSize) (*Image, error) {
  	cstr := C.CString(iconName)
  	defer C.free(unsafe.Pointer(cstr))
  	c := C.gtk_image_new_from_icon_name((*C.gchar)(cstr),
  		C.GtkIconSize(size))
  	if c == nil {
  		return nil, nilPtrErr
  	}
  	obj := glib.Take(unsafe.Pointer(c))
  	return wrapImage(obj), nil
  }
docs: // TODO(jrick) GtkIconSet
  /*
  func ImageNewFromIconSet() {
  }
  */
  // TODO(jrick) GdkPixbufAnimation
  /*
  func ImageNewFromAnimation() {
  }
  */
  // ImageNewFromIconName() is a wrapper around gtk_image_new_from_icon_name().