// Verify sort fields are initialized
        assertNotNull(queryFieldConfig.getSortFields());
        assertTrue(queryFieldConfig.getSortFields().length > 0);
        assertEquals(QueryFieldConfig.SCORE_SORT_VALUE, queryFieldConfig.getSortFields()[0]);

        // Verify API response field set is initialized
        assertNotNull(queryFieldConfig.apiResponseFieldSet);

    }

    /**
     * Gets the fields that can be used for sorting search results.
     *
     * @return array of field names that can be used for sorting
     */
    public String[] getSortFields() {
        return sortFields;
    }

    /**
     * Sets the fields that can be used for sorting search results.
     *
     * @param sortFields array of field names that can be used for sorting