hg: jdk/sandbox: flatmap-branch: Added initial javadoc for new flatmap operation

[patrick.concannon at oracle.com]

Changeset: 8130b18b4969
Author:    pconcannon
Date:      2020-03-12 15:52 +0000
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/8130b18b4969

flatmap-branch: Added initial javadoc for new flatmap operation

! src/java.base/share/classes/java/util/stream/Stream.java
! test/jdk/java/util/stream/test/org/openjdk/tests/java/util/stream/BiConsumerFlatMapOpTest.java < test/jdk/java/util/stream/test/org/openjdk/tests/java/util/stream/ConsumerFlatMapOpTest.java
! test/jdk/java/util/stream/test/org/openjdk/tests/java/util/stream/FlatMapOpTest.java
! test/jdk/lib/testlibrary/bootlib/java.base/java/util/stream/DefaultMethodStreams.java