documentation/manual/working/javaGuide/main/http/code/javaguide/http/JavaActionsComposition.java
@With(PassArgAction.class)
  public static Result passArgIndex(Http.Request request) {
    User user = request.attrs().get(Attrs.USER);
    return ok(Json.toJson(user));
  }
@With(PassArgAction.class)
  public static Result passArgIndex(Http.Request request) {
    User user = request.attrs().get(Attrs.USER);
    return ok(Json.toJson(user));
  }
#pass-arg-action-index