anchor.diff:    @InputRouteResponse()
     Response<String> post(Response<List> incoming) {
       Response<String> resp = new Response<String>.cloneExceptValue(incoming);
  -    resp.value = JSON.encode(resp.value);
  +    resp.value = JSON.encode(incoming.value);
       return resp;
     }
   }
  
positive.code:   @InputRouteResponse()
    Response<String> post(Response<Map> incoming) {
      Response<String> resp = new Response<String>.cloneExceptValue(incoming);
      resp.value = JSON.encode(resp.value);
      return resp;
    }
  }
  
negative.code:   @InputRouteResponse()
    Response<String> post(Response incoming) {
      Response<String> resp = new Response<String>.cloneExceptValue(incoming);
      resp.value = JSON.encode(incoming.value);
      return resp;
    }
  }
  