com_baeldung_rxjava_AsyncAndSyncToObservableIntegrationTest_java
io.reactivex.internal.observers.DeferredScalarDisposable
 -> java.util.concurrent.atomic.AtomicReference.get(): java.lang.Object -> java.util.List.add(java.lang.Object): boolean -> java.util.ArrayList.add(java.lang.Object): boolean -> java.util.ArrayList.size(): int -> java.util.concurrent.CountDownLatch.countDown(): void