Three entities and two components some ones implementing the same interface.
At line 6 you can see the map of the property Message of the interface.
At line 7 you can see exception of the above rule only for the class Twett.
Where is the exception not of a convention but of the persistent representation of the property of an interface is clear, no ?
The XMLIf you analyze the below XML you will see the ConfORM’s capability to understand the polymorphism.
Are you ConfORM ?
P.S. Now is time to work in another level of polymorphism between class-interfaces relations.