@Override
    public int hashCode() {
        return Objects.hashCode(instanceId, hostName, appName, appGroupName, ipAddr, vipAddress,
                                secureVipAddress, port, securePort, status,
                                homePageUrlPath, homePageUrl, statusPageUrlPath, statusPageUrl,
                                healthCheckUrlPath, healthCheckUrl,
                                secureHealthCheckUrl, dataCenterInfo, leaseInfo, metadata);
    }
Returns the last dirty timestamp of this instance.
eureka/src/main/java/com/linecorp/armeria/common/eureka/InstanceInfo.java