protected SortBuilder<?>[] defaultSortBuilders;

    /** Prefix used for highlight field names in search results */
    protected String highlightPrefix = "hl_";

    /** Default facet information configuration for search results */
    protected FacetInfo defaultFacetInfo;

    /** Default geographic information configuration for location-based searches */

        queryHelper.setHighlightPrefix("highlight_");
        assertEquals("highlight_", queryHelper.getHighlightPrefix());
    }

    @Test
    public void test_getHighlightPrefix() {
        assertEquals("hl_", queryHelper.getHighlightPrefix());
    }

    @Test
    public void test_getDefaultFacetInfo() {
        assertNull(queryHelper.getDefaultFacetInfo());
    }

    @Test