public void test_addSorts() {
        queryContext = new QueryContext("test", false);
        assertFalse(queryContext.hasSorts());

        SortBuilder<?> sort1 = SortBuilders.fieldSort("field1");
        SortBuilder<?> sort2 = SortBuilders.fieldSort("field2");

        queryContext.addSorts(sort1, sort2);

        assertTrue(queryContext.hasSorts());
        List<SortBuilder<?>> sorts = queryContext.sortBuilders();

        if (QueryFieldConfig.SCORE_FIELD.equals(field) || QueryFieldConfig.DOC_SCORE_FIELD.equals(field)) {
            return SortBuilders.scoreSort().order(order);
        }
        return SortBuilders.fieldSort(field).order(order);
    }

    /**
     * Checks if the specified field is a search field.
     * @param field The field name to check.
     * @return True if the field is a search field, false otherwise.

        assertObjectNotNull("field", field);
        if (fieldSortBuilderList == null) {
            fieldSortBuilderList = new ArrayList<>();
        }
        fieldSortBuilderList.add(SortBuilders.fieldSort(field).order(ascOrDesc ? SortOrder.ASC : SortOrder.DESC));
    }

    // ===================================================================================

                            flist.toArray(new FunctionScoreQueryBuilder.FilterFunctionBuilder[flist.size()]))
                    .boostMode(CombineFunction.MULTIPLY));
            reader.addSort(SortBuilders.fieldSort(fessConfig.getIndexFieldClickCount()));
            reader.addSort(SortBuilders.scoreSort());
            return reader;
        }, docPerReq, () -> {
            systemHelper.calibrateCpuLoad();

        assertObjectNotNull("field", field);
        if (fieldSortBuilderList == null) {
            fieldSortBuilderList = new ArrayList<>();
        }
        fieldSortBuilderList.add(SortBuilders.fieldSort(field).order(ascOrDesc ? SortOrder.ASC : SortOrder.DESC));
    }

    // ===================================================================================

        assertObjectNotNull("field", field);
        if (fieldSortBuilderList == null) {
            fieldSortBuilderList = new ArrayList<>();
        }
        fieldSortBuilderList.add(SortBuilders.fieldSort(field).order(ascOrDesc ? SortOrder.ASC : SortOrder.DESC));
    }

    // ===================================================================================

        if (QueryFieldConfig.SCORE_FIELD.equals(field) || QueryFieldConfig.DOC_SCORE_FIELD.equals(field)) {
            return SortBuilders.scoreSort().order(order);
        }
        return SortBuilders.fieldSort(field).order(order);
    }

    /**
     * Sets the prefix used for highlight field names in search results.
     *
     * @param highlightPrefix the prefix string to use for highlight fields
     */

                    final String[] values = s.split(":");
                    if (values.length > 1) {
                        return SortBuilders.fieldSort(values[0]).order("desc".equalsIgnoreCase(values[0]) ? SortOrder.DESC : SortOrder.ASC);
                    }
                    return SortBuilders.fieldSort(values[0]).order(SortOrder.ASC);
                }).toArray(n -> new SortBuilder[n]));
                ot = OptionalThing.of(sortBuilders);