((PersistentCollection<Set<?>>)previous).initialize(added, null);
((PersistentCollection<Map<?, ?>>)previous).initialize(added, null);
((PersistentCollection<List<?>>)previous).initialize(added, null);
((PersistentCollection<Set<?>>)previous).initialize(added, null);
((PersistentCollection<Map<?, ?>>)previous).initialize(added, null);
((PersistentCollection<List<?>>)previous).initialize(added, null);