code: func (v *IconView) GetModel() (*TreeModel, error) {
  	c := C.gtk_icon_view_get_model(v.native())
  	if c == nil {
  		return nil, nilPtrErr
  	}
  	obj := glib.Take(unsafe.Pointer(c))
  	return wrapTreeModel(obj), nil
  }
docs: // GetModel is a wrapper around gtk_icon_view_get_model().