Can't use the resourceClass Parameter of CXF-RS Component

When I use the resourceClass parameter as described in the docs, I get an unexpected error:

import javax.ws.rs.Path;
import javax.ws.rs.PathParam;

@Path("/sample/")
public final class SampleResource {

@Path("/

{param1}

/

{param2}

")
public Object sampleOperation(@PathParam("param1") final String param1, @PathParam("param2") final String param2)

{ return null; }

}

import org.apache.camel.builder.RouteBuilder;

public final class SampleRouteBuilder extends RouteBuilder {

@Override
public void configure()

{ from("cxfrs:http://0.0.0.0:8080?resourceClass=SampleResource")... }

}

The workaround has been using the resourceClasses parameter instead.