(UEInfoServiceContext)
contexts.get(UEInfoServiceContext.SERVICE_CONTEXT_ID);
if (usc != null) {
Throwable unknown = usc.getUE() ;
UnknownException ue = new UnknownException(unknown);
// Invoke Portable Interceptors with receive_exception:
exception = orb.getPIHandler().invokeClientPIEndingPoint(
ReplyMessage.SYSTEM_EXCEPTION, ue );