Consider using NotificationFactory and DocumentEventFactory a bit differently

[alechenninger]

Right now they essentially just parse out a single serialized entity to a java implementation with business logic, and it is hard coded that this happens per entity name or canonical type. This is a natural pattern, however it would be more flexible to just pass a factory and let this decide how it gets you a notification or document event back, which allows for more parsing options other than just by entity name. This is occasionally useful, and either way probably results in cleaner code.

[alechenninger]

Also, MessageFactory current works as is being suggested here