@Override
  public void removeSubcommunity(
      Context context, Community parentCommunity, Community childCommunity)
      throws SQLException, AuthorizeException, IOException {
    // Check authorisation
    authorizeService.authorizeAction(context, parentCommunity, Constants.REMOVE);

    ArrayList<String> removedIdentifiers = getIdentifiers(context, childCommunity);
    String removedHandle = childCommunity.getHandle();
    UUID removedId = childCommunity.getID();

    parentCommunity.removeSubCommunity(childCommunity);
    childCommunity.getParentCommunities().remove(parentCommunity);
    if (CollectionUtils.isEmpty(childCommunity.getParentCommunities())) {
      rawDelete(context, childCommunity);
    }
    log.info(
        LogManager.getHeader(
            context,
            "remove_subcommunity",
            "parent_comm_id="
                + parentCommunity.getID()
                + ",child_comm_id="
                + childCommunity.getID()));

    context.addEvent(
        new Event(
            Event.REMOVE,
            Constants.COMMUNITY,
            parentCommunity.getID(),
            Constants.COMMUNITY,
            removedId,
            removedHandle,
            removedIdentifiers));
  }
 @Override
 public DSpaceObject getParentObject(Context context, Community community) throws SQLException {
   List<Community> parentCommunities = community.getParentCommunities();
   if (CollectionUtils.isNotEmpty(parentCommunities)) {
     return parentCommunities.iterator().next();
   } else {
     return null;
   }
 }