gtk/gtk.go
func (v *RadioButton) SetGroup(group *glib.SList) {
	C.gtk_radio_button_set_group(v.native(), cGSList(group))
}
func (v *RadioButton) SetGroup(group *glib.SList) {
	C.gtk_radio_button_set_group(v.native(), cGSList(group))
}
// SetGroup is a wrapper around gtk_radio_button_set_group().