return new ProcessingInstructionNode((children == null) ? null : children.clone(stylesheet), (next == null) ? null : next.clone(stylesheet), name);
TemplateNode ret = new ProcessingInstructionNode(name); if (children != null) { ret.children = children.clone(stylesheet); } if (next != null) { ret.next = next.clone(stylesheet); } return ret;
  TemplateNode clone(Stylesheet stylesheet)  {    return new ProcessingInstructionNode((children == null) ? null :                                         children.clone(stylesheet),                                         (next == null) ? null :                                         next.clone(stylesheet),                                         name);  }