@Nullable private Long getRequestReadTimeout(IClientConfig clientConfig) {
        return Optional.ofNullable(clientConfig.get(CommonClientConfigKey.ReadTimeout))
                .map(Long::valueOf)
                .orElse(null);
    }
This method makes the assumption that the timeout is a numeric value
zuul-core/src/main/java/com/netflix/zuul/netty/timeouts/OriginTimeoutManager.java