nsCOMPtr<nsIDOMNode> model = nsXFormsUtils::GetModelAndBind(mElement, nsXFormsUtils::ELEMENT_WITH_MODEL_ATTR, nsnull);
nsCOMPtr<nsIDOMNode> model = nsXFormsUtils::GetModel(mElement);
nsXFormsRevalidateElement::HandleAction(nsIDOMEvent* aEvent,                                        nsIXFormsActionElement *aParentAction){  nsCOMPtr<nsIDOMNode> model =    nsXFormsUtils::GetModelAndBind(mElement,                                   nsXFormsUtils::ELEMENT_WITH_MODEL_ATTR,                                   nsnull);  if (model) {    if (aParentAction) {      aParentAction->SetRevalidate(model, PR_FALSE);    }    return nsXFormsUtils::DispatchEvent(model, eEvent_Revalidate);  }  return NS_OK;}