StubApi (Stagean 1.3.0 API)

```
@Documented
@Retention(RUNTIME)
@Target({ANNOTATION_TYPE,CONSTRUCTOR,FIELD,METHOD,PACKAGE,TYPE,MODULE})
public @interface StubApi
```
Flags code that has almost no API. Stub API is a dummy placeholder for real API. This annotation describes cases where implementation exists, but it is not properly exposed. To describe non-existent implementation, use StubCode.

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`String`	`value`	Free-form text used for clarification.

- Element Detail
  - value
```
String value
```
    Free-form text used for clarification. If there are too many issues to list, ApiIssue annotations can be used to spread them over several lines.
    
    Returns:
    
    free-form clarification in Markdown syntax
    
    Default:
    
    ""