The last exam objective under "Java Streams" section in IZ0-809 exam (Java 8 exam) reads:
"Use of merge() and flatMap() methods of the Streams" - Exam topics are here
There is no merge() method in Stream interface!
There is a merge(Object, Object, BiFunction) method in Map but the exam objective clearly says "merge() and flatMap() methods of the Streams". Of course there is a flatMap() method in Stream interface. So what am I missing? Is the exam objective wrong? If its a mistake in the exam objective, how to contact Oracle for reporting this problem?