protected MethodBinding<?> methodBinding(ZuulMessage zuulMesg) {
        return MethodBinding.NO_OP_BINDING;
    }
This is typically set by a filter when wanting to reject a request and also reduce load on the server by
 not processing anymore filterChain
zuul-core/src/main/java/com/netflix/zuul/netty/filter/BaseZuulFilterRunner.java