He-Pin opened a new pull request, #3283:
URL: https://github.com/apache/pekko/pull/3283
### Motivation
Several Java source files produce compilation warnings during sbt
compilation:
- `OptionalUtil.scalaNone()` has an unchecked covariant cast from
`scala.Option<?>` to `scala.Option<T>`
- `ThrottlerTransportAdapterTest` uses deprecated classic remoting APIs
(intentionally, for Java interop verification)
- `MyJavaStateStore.deleteObject(String)` overrides a deprecated interface
method from `DurableStateUpdateStore`
### Modification
- Add `@SuppressWarnings("unchecked")` to `OptionalUtil.scalaNone()`
- Add `@SuppressWarnings("deprecation")` to `ThrottlerTransportAdapterTest`
- Add `@SuppressWarnings("deprecation")` to
`MyJavaStateStore.deleteObject(String)`
### Result
Java compilation no longer reports warnings for these files. All changes are
suppression annotations on code where the underlying usage is intentional and
correct.
### Tests
- `sbt "actor / compile"` - no warnings
- `sbt "remote / Test / compile"` - no warnings
- `sbt "docs / compile"` - no warnings
### References
None - cleanup
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