RFR: 8186958: Need method to create pre-sized HashMap [v21]

[Joe Wang]

On Thu, 14 Apr 2022 18:10:28 GMT, XenoAmess <duke at openjdk.java.net> wrote:

>> 8186958: Need method to create pre-sized HashMap
>
> XenoAmess has updated the pull request incrementally with one additional commit since the last revision:
> 
>   add `@LastModified: Apr 2022` to DocumentCache

Marked as reviewed by joehw (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/7928