RFR: 8323624: ProviderList.ServiceList does not need to be a list

[Weijun Wang]

On Thu, 11 Jan 2024 22:06:43 GMT, Weijun Wang <weijun at openjdk.org> wrote:

> Re-implement it as an `Iterable` to be safe and make debugger happy.
> 
> No regression, just a refactoring.

I realized even an `Iterable` can be iterated multiple times. It should be an `Iterator`. Will re-open PR once fixed.

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PR Comment: https://git.openjdk.org/jdk/pull/17381#issuecomment-1888064422