code: func (v *Statusbar) GetMessageArea() (*Box, error) {
  	c := C.gtk_statusbar_get_message_area(v.native())
  	if c == nil {
  		return nil, nilPtrErr
  	}
  	obj := glib.Take(unsafe.Pointer(c))
  	return &Box{Container{Widget{glib.InitiallyUnowned{obj}}}}, nil
  }
docs: // GetMessageArea() is a wrapper around gtk_statusbar_get_message_area().