code: func CellRendererToggleNew() (*CellRendererToggle, error) {
  	c := C.gtk_cell_renderer_toggle_new()
  	if c == nil {
  		return nil, nilPtrErr
  	}
  	obj := glib.Take(unsafe.Pointer(c))
  	return wrapCellRendererToggle(obj), nil
  }
docs: // CellRendererToggleNew is a wrapper around gtk_cell_renderer_toggle_new().