Currently, marshalling logic for EJB client objects (e.g. SessionID) resides within the wildfly-clustering-ejb-infinispan modules. However, these marshallers will need to be leveraged by the incoming wildfly-clustering-ejb-hotrod module, thus should reside in a module consumable by each EJB cache implementation module.
Additionally, EJB client marshallers will also be needed by the distributable-web subsystem for marshalling EJB proxies with ProtoStream.