RFR: 8057113: (fs) Path should have a method to obtain the filename extension [v20]

[Alan Bateman]

On Mon, 17 Oct 2022 17:12:08 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

>> Resurrection of the proposal to add a method to obtain the filename extension originated in PR [2319](https://github.com/openjdk/jdk/pull/2319).
>
> Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8057113: Modify topic sentence of spec; remove obsolete import from test

Marked as reviewed by alanb (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/8066