List<OriginalObject> res3 = pm.getObjects(OriginalObject.class, new All());
assertEquals(0, res3.size());
// rename ChangedInheritance to OriginalObject, thus removing the
// interface
pm.changeName(ChangedInheritance.class, OriginalObject.class);
// change the database schema
pm.updateSchema(OriginalObject.class);
// search all Serializable, make sure no objects are returned
res1 = pm.getObjects(Serializable.class, new All());