Services that want to be configurable should have a ConfigurationComposite that contains all the settings.
They are treated as EntityComposites, and are therefore stored in an EntityStore. There will be one instance
per service instance that uses each ConfigurationComposite, and the reference of the entity is the same as that
of the service.
Nested Class Summary
Nested classes/interfaces inherited from interface org.apache.polygene.api.identity.HasIdentity