private static State getOrCreateCurrentState(Channel ch) {
        State state = ch.attr(ATTR_STATE).get();
        if (state == null) {
            state = createNewState(ch);
        }
        return state;
    }
User: michaels@netflix.com
Date: 4/14/16
Time: 3:51 PM
zuul-core/src/main/java/com/netflix/netty/common/metrics/HttpBodySizeRecordingChannelHandler.java