@Override
    public ClientPoolHandler addFirst(String name, ChannelHandler handler) {
        super.addFirst(name, handler);
        return this;
    }
@Test
    public void testAddFirst() {
        ClientPoolHandler handler = new ClientPoolHandler();
        Assert.assertTrue(handler.isEmpty());
        handler.addFirst(test, new TestHandler());
        Assert.assertFalse(handler.isEmpty());
    }