AuditReader reader = AuditReaderFactory.get(session);
List<Number> REVS = reader.getRevisions(Parent.class,"Parent");
Number n = REVS.get(REVS.size()-1);
deal = (E) reader.find(o.getClass(), entityName, id, n, true);
Parent deletedObject = reader.find(Parent.class,Parent.class.getName(), "Parent", n, true);
List<Child> children = (List<Child>)deletedObject.getChild();
assert children.size()>0:"Expect the result should not zero";
tx.commit();