642
642
object_class->save_plain = save_plain;
643
643
object_class->search = search;
644
644
object_class->append_selection_string = append_selection_string;
647
647
object_class->get_recursive_length = get_recursive_length;
648
648
object_class->get_n_children = get_n_children;
649
649
object_class->get_child = get_child;