Annotate generated web service client Java interface

Question

While generating an Apache CXF web service client with Maven, is there a way to add a custom annotation on a Service Endpoint Interface (SEI) class through the JAX-WS bindings file?

So far, it seems to me that things like Annox are restricted to datatypes from the schema and JAXB bindings. I tried setting the annox on the JAX-WS binding for the portType element of the WSDL, but it did not pick it up.

Thank you.