code: func (v *TreeRowReference) GetModel() ITreeModel {
  	c := C.gtk_tree_row_reference_get_model(v.native())
  	if c == nil {
  		return nil
  	}
  	m := wrapTreeModel(glib.Take(unsafe.Pointer(c)))
  	return m
  }
docs: // GetModel is a wrapper around gtk_tree_row_reference_get_path.