public static boolean exists(String name) {
        return pool.exists(name);
    }
@Test
    public void testExists() {
        String name = "test";
        assertFalse(ChannelOption.exists(name));
        ChannelOption<String> option = ChannelOption.valueOf(name);

        assertTrue(ChannelOption.exists(name));
        assertNotNull(option);
    }