Made all implementing classes return their roles directly. Change nullability attributes to the singular style across new classes.
------------- Commit messages: - 8267066: New NSAccessibility peers should return they roles and subroles directly Changes: https://git.openjdk.java.net/jdk/pull/4162/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4162&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8267066 Stats: 76 lines in 25 files changed: 42 ins; 0 del; 34 mod Patch: https://git.openjdk.java.net/jdk/pull/4162.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/4162/head:pull/4162 PR: https://git.openjdk.java.net/jdk/pull/4162
