RFR: 8280713: Related to comment inheritance jdk.javadoc cleanup and refactoring [v3]

[Jonathan Gibbons]

On Fri, 25 Feb 2022 17:46:05 GMT, Pavel Rappo <prappo at openjdk.org> wrote:

>> Explorative refactoring performed while looking into multiple `@inheritDoc` issues. The easiest way to review it is to, probably, go commit by commit; they are quite focused and commented. Not only the branch as a whole, but all the constituent commits should pass tests and leave JDK API Documentation unchanged.
>
> Pavel Rappo has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - Fix outdated code
>    
>    Uses a set instead of list for quick method search. In a future commit we'll try to figure out why `found` are not unique.
>  - Fix outdated code
>    
>    Fix outdated inline comments and names. Both the assertion and the `contains` method will be removed in a future commit.

Commit: Modernize some switches in Utils

@jddarcy All of these methods on Utils would be more generally helpful if moved to `javax.lang.model`.

Historically, we don't put convenience methods on classes like `Element`, `TypeMirror` etc, and `Elements` would be overkill (unless they were static methods?).  Maybe they could be static methods on `ElementKind`.

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PR: https://git.openjdk.java.net/jdk/pull/7233