}

    @Test
    public void test_setAndGetAppendHighlightParams() {
        // Test with null
        searchRenderData.setAppendHighlightParams(null);
        assertNull(searchRenderData.getAppendHighlightParams());

        // Test with empty string
        searchRenderData.setAppendHighlightParams("");
        assertEquals("", searchRenderData.getAppendHighlightParams());

        // Test with parameter string