RFR: 8331008: Implement JEP 478: Key Derivation Function API (Preview) [v10]

[Kevin Driver]

On Tue, 13 Aug 2024 21:51:55 GMT, Valerie Peng <valeriep at openjdk.org> wrote:

>> Yes. We want the implementation to return the parameters, especially if it is supplying any defaults.
>
> Since it must be overridden, no way for the `UnsupportedOperationException` to happen?

The text implies that implementations may throw `UnsupportedOperationException` in their method body, even though they are technically forced to override the method.

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PR Review Comment: https://git.openjdk.org/jdk/pull/20301#discussion_r1717149497