+ {
+ Pointer_group_interface::add_grob (note_column_, ly_symbol2scm ("elements"), arpeggio_);
+ note_column_->set_object ("arpeggio", arpeggio_->self_scm ());
+ }
+ if (flag_)
+ Pointer_group_interface::add_grob (note_column_, ly_symbol2scm ("elements"), flag_);