private static void addServiceOrdered(List<ServiceViewItem> children, ServiceNode child, ServiceViewContributor<?> contributor) {
    if (!children.isEmpty() && contributor instanceof Comparator) {
      @SuppressWarnings("unchecked")
      Comparator<Object> comparator = (Comparator<Object>)contributor;
      for (int i = 0; i < children.size(); i++) {
        ServiceViewItem anchor = children.get(i);
        if (anchor instanceof ServiceNode) {
          if (comparator.compare(child.getService(), ((ServiceNode)anchor).getService()) < 0) {
            children.add(i, child);
            return;
          }
        }
      }
    }
    children.add(child);
  }
private static void addServiceOrdered(List<ServiceViewItem> children, ServiceNode child, ServiceViewContributor<?> contributor)