RFR: JDK-8329624: Add visitors for preview language features

[Vicente Romero]

On Wed, 3 Apr 2024 21:38:03 GMT, Joe Darcy <darcy at openjdk.org> wrote:

>> src/java.compiler/share/classes/javax/lang/model/util/SimpleElementVisitorPreview.java line 2:
>> 
>>> 1: /*
>>> 2:  * Copyright (c) 2019, 2024, Oracle and/or its affiliates. All rights reserved.
>> 
>> general, please check the copyright years
>
> Starting with 2019 was intentional as I copied the corresponding FooVisitor14 file into FooVisitorPreview and then began editing.

ok

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PR Review Comment: https://git.openjdk.org/jdk/pull/18609#discussion_r1550548814