com_baeldung_guava_future_ListenableFutureComplexUnitTest_java
com.google.common.util.concurrent.MoreExecutors$DirectExecutorService
 -> java.lang.Runnable.run(): void -> java.util.concurrent.Callable.call(): java.lang.Object -> java.util.concurrent.Future.isDone(): boolean -> java.util.concurrent.Future.get(): java.lang.Object -> java.lang.Thread.interrupted(): boolean -> java.lang.Integer.intValue(): int -> java.util.concurrent.Future.isDone(): boolean -> java.util.concurrent.Future.get(): java.lang.Object -> java.lang.Thread.interrupted(): boolean -> java.util.concurrent.Future.isDone(): boolean -> java.util.concurrent.Future.get(): java.lang.Object -> java.lang.Thread.interrupted(): boolean -> java.lang.Integer.valueOf(int): java.lang.Integer -> java.lang.Object.notifyAll(): void