code: public void appendElements(ExtensionPoint... elements) {
      List<ExtensionPoint> rc = new ArrayList<ExtensionPoint>();
      rc.addAll(Arrays.asList(this.elements));
      rc.addAll(Arrays.asList(elements));
      this.elements = rc.toArray(new ExtensionPoint[0]);
    }
docs: Append extension point entries
  
  @param elements array of append extension point entries