Extension methods with @Self doesn't work sometimes.

[pangwa]

Describe the bug
I wrote an extension class which returns the ApiResult<T> which T was supposed to be the type of the caller. I wrote the extension method exactly as below.

@Extension
public class ObjectExtension {
  public static ApiResult<@Self Object> toApiResult(@This Object thiz) {
    return ApiResult.success(thiz);
  }

It works in most cases, but in some files, the code can't be compiled.

 public ApiResult<User> getUser() {
   User u = ...;
    return u.toApiResult();
  }

The same code could be compiled in some files, but in a little files, it can't, I don't know why.

To Reproduce
Implement an object extension as above.

Expected behavior
Code could be compiled.

Screenshots

Desktop (please complete the following information):

• OS Type & Version: Windows 11
• Java/JDK version: jdk 17
• IDE version (IntelliJ IDEA or Android Studio): IntelliJ IDEA
• Manifold version: 2023.1.19
• Manifold IntelliJ plugin version: 2023.1.19

[rsmckinney]

Hi @pangwa. Can you provide the compile error message or stack trace? Also the class where it fails? That would help me diagnose this issue. Thanks :)

[pangwa]

below is the error message:
java\ai\myproject\controllers\UserController.java:52:25 java: 不兼容的类型: ai.myproject.dto.ApiResult<@manifold.ext.rt.api.Self java.lang.Object>无法转换为ai.myproject.dto.ApiResult<ai.myproject.model.User> java\ai\myproject\controllers\UserController.java java: 某些输入文件使用了未经检查或不安全的操作。 C:\work\ai-platform\src\main\java\ai\myproject\controllers\UserController.java java: 有关详细信息, 请使用 -Xlint:unchecked 重新编译。

It happens in several places , such as spring controller/services(annotated with @RestController or @service).