RFR: 8171382: java.time.Duration missing isPositive method

[Iris Clark]

On Fri, 23 Jul 2021 17:27:27 GMT, Naoto Sato <naoto at openjdk.org> wrote:

> Please review this PR to introduce `java.time.Duration.isPositive()` method. A CSR is also drafted.

Looks good!  I've also Reviewed the associated CSR.

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Marked as reviewed by iris (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/4892