code: func (v *ListBoxRow) GetHeader() *Widget {
  	c := C.gtk_list_box_row_get_header(v.native())
  	if c == nil {
  		return nil
  	}
  	return wrapWidget(glib.Take(unsafe.Pointer(c)))
  }
docs: // GetHeader is a wrapper around gtk_list_box_row_get_header().