The websphereWebServices target takes a number of previously generated Java files and deployment descriptors and packages them up into an EAR file.
The Java files and deployment descriptors are generated during the build process (see the Cúram Server Developer's Guide) based on the web service components that have been defined in the model. BPO classes should be mapped to server components with a stereotype of webservice for this generation to occur1. Any server component with a stereotype of webservice will be treated as if it also had a stereotype of ejb. This is because Web Service interfaces are wrappers on publicly available BPOs.