RFR: 8358970: CounterMonitorMBean.getDerivedGaugeTimeStamp() JavaDoc incorrectly documents null

[Serguei Spitsyn]

On Mon, 9 Jun 2025 13:15:27 GMT, Kevin Walls <kevinw at openjdk.org> wrote:

> Simple correction where API docs state a return value may be "null", but in fact this is a result of type long, and may be zero.

Looks good and trivial.

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Marked as reviewed by sspitsyn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/25694#pullrequestreview-2912664548