Conformance 7.3 (Unsupported WebServiceFeatureAnnotation): If an unrecongnized or unsupported
annotation annotated with the WebServiceFeatureAnnotation meta-annotation:
• In a client setting, an implementation MUST NOT invoke the remote operation being invoked, if any.
Instead, it MUST throw a WebServiceException, setting its cause to an exception approximating
the cause of the error (e.g. an IllegalArgumentException or a ClassNotFoundException).
• In a server setting, annotation, an implementation MUST NOT dispatch to an endpoint implementation
object. Rather, it MUST generate a fault appropriate to the binding in use.