private Completable maybeClearScroll(Json.Result result) {
    Objects.requireNonNull(result, "result");
    return result.scrollId().map(scrollId -> ops.closeScroll(Collections.singleton(scrollId)))
            .orElse(Completable.complete());
  }
If scrollId is available will close scroll context
criteria/elasticsearch/src/org/immutables/criteria/elasticsearch/Scrolling.java