CXF Rest Client with Jackson provider // The expected result class in an interface

Question

I have a rest service, and a client using CXF webservice proxy coming with Jackson mapper. For some reason, I have to design the result class as an interface. Something like following:

public interface SomeInterface {...}

and the proxy

@GET
@Path("/something/{id}")
public SomeInterface getById(@PathParam("id") String id);

SomeInterface will have several implementations. Now Jackson will complain that it cannot construct a new "SomeInterface" instance, yes, that's right.

But is there any way to tell Jackson to construct a concrete implementation of SomeInterface or not?

Thanks a lot, KK