com_baeldung_reactor_exception_ExceptionUnitTest_java
reactor.core.publisher.FluxFlatMap$FlatMapMain
 -> java.util.concurrent.atomic.AtomicIntegerFieldUpdater.getAndIncrement(java.lang.Object): int -> java.util.concurrent.atomic.AtomicReferenceFieldUpdater.get(java.lang.Object): java.lang.Object -> java.util.concurrent.atomic.AtomicReferenceFieldUpdater.getAndSet(java.lang.Object,java.lang.Object): java.lang.Object -> java.util.concurrent.atomic.AtomicIntegerFieldUpdater.lazySet(java.lang.Object,int): void -> java.util.Queue.peek(): java.lang.Object -> java.util.Queue.peek(): java.lang.Object -> java.util.Queue.poll(): java.lang.Object -> java.util.function.BiFunction.apply(java.lang.Object,java.lang.Object): java.lang.Object -> java.lang.Class.isInstance(java.lang.Object): boolean -> java.util.Optional.empty(): java.util.Optional -> java.util.Optional.isPresent(): boolean -> java.util.Queue.peek(): java.lang.Object -> java.util.concurrent.CountDownLatch.countDown(): void