@Override
        public void endList(DataList<?> list) {
            StringDataList stringDataList = checkInstanceList(list);
            try {
                stream.write((" endList" + stringDataList.getString()).getBytes(CHARSET));
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
Validate we get a full response with a malformed response structure.
container-core/src/test/java/com/yahoo/processing/rendering/AsynchronousSectionedRendererTest.java