4.x Cleanup: isEmpty, general intellij cleanups

[akarnokd]

• Remove @SafeVarargs from varargs with non-generic element types.
• Remove unnecessary semicolons.
• Use switch expression.
• Remove inferrable generic type declarations.
• Javadocs cleanup

[github-actions]

🐷 TruffleHog + Entropy Beauty Scan

Average entropy of changed code: 4.499 bits/char
Verdict: ✅ Mid-4 beauty detected (thoughtful human code!)

Changed files entropy:

src/main/java/io/reactivex/rxjava4/core/CompletionStageDisposable.java: 4.610
src/main/java/io/reactivex/rxjava4/core/Notification.java: 4.610
src/main/java/io/reactivex/rxjava4/disposables/ActionDisposable.java: 4.944
src/main/java/io/reactivex/rxjava4/disposables/AutoCloseableDisposable.java: 4.952
src/main/java/io/reactivex/rxjava4/disposables/CompositeDisposable.java: 4.285
src/main/java/io/reactivex/rxjava4/disposables/FutureDisposable.java: 4.933
src/main/java/io/reactivex/rxjava4/disposables/ReferenceDisposable.java: 4.865
src/main/java/io/reactivex/rxjava4/disposables/RunnableDisposable.java: 4.981
src/main/java/io/reactivex/rxjava4/disposables/SubscriptionDisposable.java: 4.996
src/main/java/io/reactivex/rxjava4/exceptions/CompositeException.java: 4.386
src/main/java/io/reactivex/rxjava4/exceptions/MissingBackpressureException.java: 4.883
src/main/java/io/reactivex/rxjava4/exceptions/OnErrorNotImplementedException.java: 4.876
src/main/java/io/reactivex/rxjava4/exceptions/ProtocolViolationException.java: 4.944
src/main/java/io/reactivex/rxjava4/exceptions/QueueOverflowException.java: 4.912
src/main/java/io/reactivex/rxjava4/exceptions/UndeliverableException.java: 4.960
src/main/java/io/reactivex/rxjava4/internal/disposables/ArrayCompositeDisposable.java: 4.480
src/main/java/io/reactivex/rxjava4/internal/disposables/CancellableDisposable.java: 4.807
src/main/java/io/reactivex/rxjava4/internal/disposables/ListCompositeDisposable.java: 4.090
src/main/java/io/reactivex/rxjava4/internal/disposables/SequentialDisposable.java: 4.695
src/main/java/io/reactivex/rxjava4/internal/jdk8/FlowableCollectWithCollector.java: 4.523

✅ No secrets or suspicious high-entropy strings found.

Mid-4 beauty heuristic in action — powered by our entropy chats! 😊

[github-actions]

🐷 TruffleHog + Entropy Beauty Scan

Average entropy of changed code: 4.499 bits/char
Verdict: ✅ Mid-4 beauty detected (thoughtful human code!)

Changed files entropy:

src/main/java/io/reactivex/rxjava4/core/CompletionStageDisposable.java: 4.610
src/main/java/io/reactivex/rxjava4/core/Notification.java: 4.610
src/main/java/io/reactivex/rxjava4/disposables/ActionDisposable.java: 4.944
src/main/java/io/reactivex/rxjava4/disposables/AutoCloseableDisposable.java: 4.952
src/main/java/io/reactivex/rxjava4/disposables/CompositeDisposable.java: 4.285
src/main/java/io/reactivex/rxjava4/disposables/FutureDisposable.java: 4.933
src/main/java/io/reactivex/rxjava4/disposables/ReferenceDisposable.java: 4.865
src/main/java/io/reactivex/rxjava4/disposables/RunnableDisposable.java: 4.981
src/main/java/io/reactivex/rxjava4/disposables/SubscriptionDisposable.java: 4.996
src/main/java/io/reactivex/rxjava4/exceptions/CompositeException.java: 4.386
src/main/java/io/reactivex/rxjava4/exceptions/MissingBackpressureException.java: 4.883
src/main/java/io/reactivex/rxjava4/exceptions/OnErrorNotImplementedException.java: 4.876
src/main/java/io/reactivex/rxjava4/exceptions/ProtocolViolationException.java: 4.944
src/main/java/io/reactivex/rxjava4/exceptions/QueueOverflowException.java: 4.912
src/main/java/io/reactivex/rxjava4/exceptions/UndeliverableException.java: 4.960
src/main/java/io/reactivex/rxjava4/internal/disposables/ArrayCompositeDisposable.java: 4.480
src/main/java/io/reactivex/rxjava4/internal/disposables/CancellableDisposable.java: 4.807
src/main/java/io/reactivex/rxjava4/internal/disposables/ListCompositeDisposable.java: 4.090
src/main/java/io/reactivex/rxjava4/internal/disposables/SequentialDisposable.java: 4.695
src/main/java/io/reactivex/rxjava4/internal/jdk8/FlowableCollectWithCollector.java: 4.523

✅ No secrets or suspicious high-entropy strings found.

Mid-4 beauty heuristic in action — powered by our entropy chats! 😊

[github-actions]

🐷 TruffleHog + Entropy Beauty Scan

Average entropy of changed code: 5.083 bits/char
Verdict: ⚠️ Consider review — entropy outside sweet spot

Changed files entropy:

.github/workflows/gradle_branch.yml: 5.083
.github/workflows/gradle_pr.yml: 4.933
.github/workflows/gradle_preview_jdks.yml: 5.129
.github/workflows/gradle_release.yml: 5.211
.github/workflows/gradle_snapshot.yml: 5.059

✅ No secrets or suspicious high-entropy strings found.

Mid-4 beauty heuristic in action — powered by our entropy chats! 😊

[github-actions]

🐷 TruffleHog + Entropy Beauty Scan

Average entropy of changed code: 5.083 bits/char
Verdict: ⚠️ Consider review — entropy outside sweet spot

Changed files entropy:

.github/workflows/gradle_branch.yml: 5.083
.github/workflows/gradle_pr.yml: 4.933
.github/workflows/gradle_preview_jdks.yml: 5.129
.github/workflows/gradle_release.yml: 5.211
.github/workflows/gradle_snapshot.yml: 5.059

✅ No secrets or suspicious high-entropy strings found.

Mid-4 beauty heuristic in action — powered by our entropy chats! 😊

[github-actions]

🐷 TruffleHog + Entropy Beauty Scan

Average entropy of changed code: 5.083 bits/char
Verdict: ⚠️ Consider review — entropy outside sweet spot

Changed files entropy:

.github/workflows/gradle_branch.yml: 5.083
.github/workflows/gradle_pr.yml: 4.933
.github/workflows/gradle_preview_jdks.yml: 5.129
.github/workflows/gradle_release.yml: 5.211
.github/workflows/gradle_snapshot.yml: 5.059

✅ No secrets or suspicious high-entropy strings found.

Mid-4 beauty heuristic in action — powered by our entropy chats! 😊

[akarnokd]

Something broke the unit tests on CI and no idea what. I'll redo the cleanups part by part.