protected void addZuulHandlers(ChannelPipeline pipeline) {
        pipeline.addLast("logger", nettyLogger);
        pipeline.addLast(new ClientRequestReceiver(sessionContextDecorator));
        pipeline.addLast(passportLoggingHandler);
        addZuulFilterChainHandler(pipeline);
        pipeline.addLast(new ClientResponseWriter(requestCompleteHandler, registry));
    }
Call {@link #BaseZuulChannelInitializer(String, ChannelConfig, ChannelConfig, ChannelGroup)} instead.
zuul-core/src/main/java/com/netflix/zuul/netty/server/BaseZuulChannelInitializer.java