set => base.CanBeSavedCallback = i => value(_list.ArrayElementAtOrDefault(i));
set => base.ContextMenuCallback = i => value(_list.ArrayElementAtOrDefault(i));
set => base.CanBeSavedCallback = i => value(_list.ArrayElementAtOrDefault(i));
set => base.ContextMenuCallback = i => value(_list.ArrayElementAtOrDefault(i));