public void putAll(final Map<? extends String, ? extends String> m) {
    if (m == null) {
      return;
    }

    for (final Map.Entry<? extends String, ? extends String> entry : m.entrySet()) {
      this.put(entry.getKey(), entry.getValue());
    }
  }
Put everything in the map into the props.
dss-appconn/appconns/dss-eventchecker-appconn/src/main/java/com/webank/wedatasphere/dss/appconn/eventchecker/utils/Props.java