public boolean removeNode(String key, String group) {
        return zkClient.removeConfig(key, group);
    }
@Test
    public void testRemoveNode() {
        int index = CHILD_ONE_PATH.lastIndexOf("/");
        String parentPath = CHILD_ONE_PATH.substring(0, index);
        String key = CHILD_ONE_PATH.substring(index + 1);
        boolean deleteChileOne = zooKeeperBufferedClient.removeNode(key, parentPath);
        Assert.assertTrue(deleteChileOne);
        boolean deleteChileTwo = zooKeeperBufferedClient.removeNode(CHILE_TWO_PATh_KEY, CHILE_TWO_PATh_PARENT);
        Assert.assertTrue(deleteChileTwo);
        boolean deleteParentNode = zooKeeperBufferedClient.removeNode(PARENT_PATH, null);
        Assert.assertTrue(deleteParentNode);
    }