@Override
  public int hashCode() {
    int code = this._current.hashCode();
    if (this._parent != null) {
      code += this._parent.hashCode();
    }
    return code;
  }
Returns true if the properties are equivalent, regardless of the hierarchy.
dss-appconn/appconns/dss-eventchecker-appconn/src/main/java/com/webank/wedatasphere/dss/appconn/eventchecker/utils/Props.java