code: public static AsyncSearchQueryResult fromHttp429(String payload) {
          SearchStatus status = new DefaultSearchStatus(1L, 1L, 0L);
          SearchMetrics metrics = new DefaultSearchMetrics(0L, 0L, 0d);
  
          return new DefaultAsyncSearchQueryResult(
                  status,
                  Observable.<SearchQueryRow>error(new FtsServerOverloadException(payload)),
                  Observable.<FacetResult>empty(),
                  Observable.just(metrics)
          );
      }
docs: Creates a result out of the http 429 response code if retry didn't work.