At this point, the copy of the object has become the real object, the object at the
source has become the stale object, and the move is deemed successful and cannot be
aborted.
This method is executed on the original stale object at the source, and is typically
defined to perform activities such as removing the stale object from persistence.
PublishedEventListener is the interface that must be implemented by
any object that wishes to directly receive notification of events
published into a Space.