Support abstract event registrations within an Aggregate

[dealproc]

I am unsure if this is desirable or not, but I'd like to have an ability to do this, if it makes sense:

public class MyAggregate : AggregateRoot {

  private void RegisterEvents() { 
     Register<SomeAbstractClass>(Apply)
  }

  private void Apply(SomeAbstractClass msg) {
    ....
  }
}

public abstract class SomeAbstractClass : Event {
}

And have the router route any concrete types from SomeAbstractClass to an Apply(SomeAbstractClass msg) {...} handler. As it stands now, I have an abstract Apply(SomeAbstractClass msg) { }, then do registrations per concrete class to the abstract class handler.