Add `getParams` to `PublicKey` and `PrivateKey` so it's available to all current and future public and private keys.
No test. Might add one. ------------- Commit messages: - 8318096: Add getParams method in PublicKey and PrivateKey Changes: https://git.openjdk.org/jdk/pull/16222/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16222&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8318096 Stats: 256 lines in 16 files changed: 238 ins; 0 del; 18 mod Patch: https://git.openjdk.org/jdk/pull/16222.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/16222/head:pull/16222 PR: https://git.openjdk.org/jdk/pull/16222
