UML25 — Event pools for passive objects

There does not seem to be any constraint that prevents a passive object from owning an event pool. Perhaps this is by design, but, if so, it is not clear how such an event pool is serviced. It looks like this should be clarified or perhaps a constraint preventing passive objects from having event pools should be introduced.

Currently, the only constraint related to Class:isActive is the passive_class constraint that “Only an active Class may
own Receptions and have a classifierBehavior.” This means that a passive class may still have ownedBehaviors (including
methods of operations), and these may service the event pool of instances of the class. (Note also that a passive
object may receive Signal instances into its event pool, even though its Class does not have receptions.)
Disposition: Closed - No Change