public void putLocal(final Props p) {
    for (final String key : p.localKeySet()) {
      this.put(key, p.get(key));
    }
  }
Puts only the local props from p into the current properties
dss-appconn/appconns/dss-eventchecker-appconn/src/main/java/com/webank/wedatasphere/dss/appconn/eventchecker/utils/Props.java