Interceptors on base / abstract class

[UbiquitousBear]

I've an interceptor @PartitionAwareEntityReference which is defined on an abstract class:public abstract class AbstractEntity, which has a method: public EntityReference getEntityReference():

@PartitionAwareEntityReference
public abstract class AbstractEntity {
   public EntityReference getEntityReference() {}
}

The EntityReference needs additional enriching sometimes, so I'm using an interceptor to add data:

@PartitionAwareEntityReference
@Priority(100)
@Interceptor
public class PartitionAwareEntityReferenceInterceptor {

    @Inject
    SecurityIdentity securityIdentity;

    @AroundInvoke
    public Object enrichPartition(InvocationContext context) throws Exception {}
}

I've noted that the interceptor annotation cannot be added to the method getEntityReference, however can at class level. Currently as implemented, the enrichment isn't happening. Is this implementation valid?