How to trigger same function accross multiple classes?

[Inverness]

For the new mud system I'm working on its imperative that I be able to trigger same the function across multiple classes, preferably in the order the classes are joined to the object.

For example, I have Object, and I join ClassA and ClassB to Object, I must have a way of triggering the Created event in ClassA then ClassB as they have their own things that need to be done.