Can't set serviceName and endpointName on an EndpointReference

Question

I need to add ServiceName and PortName information on a W3CEndpointReference, but even if I add those to the W3CEndpointReferenceBuilder, this information won't show on the resulting EPR.

This is preventing me from successfully creating a proxy to consume the service, getting the following error when I call epr.getPort(InterfaceClass.class):

javax.ejb.EJBException: javax.xml.ws.WebServiceException: 
Cannot get port meta data for: package.ClassName

My tech. stack:

• JBoss 5.1.0
• JDK 6
• JAXWS-RI 2.1.7 (on the JSE client side of my app).

Is there a workaround to fill this meta data?

Thanks in advance!