}
      iterations++;
      if (iterations >= maxIterations) {
        @SuppressWarnings("nullness") // safe because we pass sort() a range that contains real Ts
        T[] castBuffer = (T[]) buffer;
        // We've already taken O(k log k), let's make sure we don't take longer than O(k log k).
        sort(castBuffer, left, right + 1, comparator);
        break;
      }
    }
    bufferSize = k;

                searchRequestBuilder.setFetchSource(responseFields, null);
            }

            // rescorer
            buildRescorer(queryHelper, queryFieldConfig, fessConfig);

            // sort
            buildSort(queryContext, queryFieldConfig, fessConfig);

            // highlighting
            if (highlightInfo != null) {
                buildHighlighter(queryHelper, queryFieldConfig, fessConfig);