@ValueSerialNum(0)
    public void setEnv(String env) {
        if (null == getValue()) {
            setValue(new HashMap<>(1));
        }
        getValue().put(DSS_ENV_LABEL_KEY, env);
    }
Used to mark the env of this micro-services.
dss-commons/dss-common/src/main/java/com/webank/wedatasphere/dss/common/label/EnvDSSLabel.java