public boolean finish() {
        return finish(false);
    }
@Test
    public void testParent() {
        EmbeddedChannel parent = new EmbeddedChannel();
        EmbeddedChannel channel = new EmbeddedChannel(parent, EmbeddedChannelId.INSTANCE, true, false);
        assertSame(parent, channel.parent());
        assertNull(parent.parent());

        assertFalse(channel.finish());
        assertFalse(parent.finish());
    }