public void setEarliestAncestor(final Props parent) {
    final Props props = getEarliestAncestor();
    props.setParent(parent);
  }
Clones the Props p object and all of its parents.
dss-appconn/appconns/dss-eventchecker-appconn/src/main/java/com/webank/wedatasphere/dss/appconn/eventchecker/utils/Props.java