// Test empty string
        String query6 = "";
        String escaped6 = SuggestUtil.escapeWildcardQuery(query6);
        assertEquals("", escaped6);
    }

    @Test
    public void testGetAsListWithEmptyList() {
        // Test with empty list
        List<String> emptyList = new ArrayList<>();
        List<String> result = SuggestUtil.getAsList(emptyList);
        assertNotNull(result);