entry.removeChild(childName);
        assertFalse(entry.hasChild(childName));
        assertTrue(entry.hasChanges());

        // Remove non-existent child - should not change state
        entry.removeChild("nonexistent.txt");
        assertTrue(entry.hasChanges()); // Still has changes from previous removal
    }

    @Test
    public void testGetChildren() {
        // Add multiple children

    CIFSContext context = getTestContext();
    context.getConfig().setProperty("jcifs.smb.client.useRDMA", "true");
    context.getConfig().setProperty("jcifs.smb.client.rdmaProvider", "nonexistent");
    
    SmbFile file = new SmbFile("smb://server/share/test.txt", context);
    
    // Should work even if RDMA provider is not available
    file.createNewFile();
    assertTrue(file.exists());
}

    @Test
    public void testDeleteByQueryWithNoMatches() {
        // Test delete with query that matches nothing
        boolean result = SuggestUtil.deleteByQuery(client, settings, TEST_INDEX, QueryBuilders.termQuery("nonexistent", "value"));
        assertTrue(result); // Should still return true even with no matches
    }

    @Test(expected = SuggesterException.class)
    public void testDeleteByQueryWithInvalidIndex() {

        assertEquals(1, intValues.length);
        assertEquals("123", intValues[0]);

        String[] nullValues = defaultContentsParser.getFieldValues(document, "non_existent");
        assertEquals(0, nullValues.length);
    }

    @Test
    public void test_parseSearchWords() throws Exception {
        String[] words = new String[] { "検索", "エンジン" };