This PR proposes adding `@Serial` annotations to certain fields participating in serialisation.
------------- Commit messages: - Annotate serailzation fields with @Serial Changes: https://git.openjdk.org/jdk/pull/11347/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11347&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8297515 Stats: 27 lines in 7 files changed: 27 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/11347.diff Fetch: git fetch https://git.openjdk.org/jdk pull/11347/head:pull/11347 PR: https://git.openjdk.org/jdk/pull/11347
