@SuppressWarnings("unchecked")
        public Response process(Request request, Execution execution) {
            Response response = execution.process(request);
            while (response.data().asList().size() < 6) {
                request.properties().set("appendage", request.properties().getInteger("appendage") + 1);
                Response additional = execution.process(request);
                response.mergeWith(additional);
                response.data().asList().addAll(additional.data().asList());
            }
            return response;
        }
Sends the request multiple times to get at least 6 pieces of data
container-core/src/test/java/com/yahoo/processing/test/ProcessorLibrary.java