RFR: 8352969: G1: Improve testability of optional collections [v10]

[Guanqiang Han]

On Thu, 11 Sep 2025 07:17:57 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

>> Guanqiang Han has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Update TestOptionalRegionGC.java
>>   
>>   Correct the formatting errors
>
> Good.

@tschatzl Thank you for the approval. I’ve integrated this PR. Could you please sponsor it? Thanks!

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PR Comment: https://git.openjdk.org/jdk/pull/26880#issuecomment-3278932459