@Override
    public void configure(final ChannelPipeline pipeline) {
        super.configure(pipeline);
        pipeline.addFirst(contextHandler);
    }
A wrapper around HttpChannelizer which saves and exposes the ChannelHandlerContext for testing purposes
gremlin-server/src/test/java/org/apache/tinkerpop/gremlin/server/channel/HttpTestChannelizer.java