public static final ChannelHandlerContext getChannelHandlerContext(ZuulMessage mesg) {
        return (ChannelHandlerContext) com.google.common.base.Preconditions.checkNotNull(
                mesg.getContext().get(CommonContextKeys.NETTY_SERVER_CHANNEL_HANDLER_CONTEXT),
                "channel handler context");
    }
Subclasses of this class are supposed to be thread safe

Created by saroskar on 5/18/17.
zuul-core/src/main/java/com/netflix/zuul/netty/filter/BaseZuulFilterRunner.java