code: func StatusIconNewFromFile(filename string) (*StatusIcon, error) {
  	cstr := C.CString(filename)
  	defer C.free(unsafe.Pointer(cstr))
  	c := C.gtk_status_icon_new_from_file((*C.gchar)(cstr))
  	if c == nil {
  		return nil, nilPtrErr
  	}
  	return wrapStatusIcon(glib.Take(unsafe.Pointer(c))), nil
  }
docs: // StatusIconNewFromFile is a wrapper around gtk_status_icon_new_from_file()