core/play/src/main/java/play/mvc/Controller.java
public static Result TODO(Request request) {
    return status(NOT_IMPLEMENTED, views.html.defaultpages.todo.render(request.asScala()));
  }
public static Result TODO(Request request) {
    return status(NOT_IMPLEMENTED, views.html.defaultpages.todo.render(request.asScala()));
  }
Generates a 501 NOT_IMPLEMENTED simple result.