gtk/gtk.go
func (v *TreeModelFilter) ConvertIterToChildIter(filterIter *TreeIter) *TreeIter {
	var iter C.GtkTreeIter
	C.gtk_tree_model_filter_convert_iter_to_child_iter(v.native(), &iter, filterIter.native())
	t := &TreeIter{iter}
	return t
}
func (v *TreeModelFilter) ConvertIterToChildIter(filterIter *TreeIter) *TreeIter {
	var iter C.GtkTreeIter
	C.gtk_tree_model_filter_convert_iter_to_child_iter(v.native(), &iter, filterIter.native())
	t := &TreeIter{iter}
	return t
}
// ConvertIterToChildIter is a wrapper around gtk_tree_model_filter_convert_child_iter_to_iter().