RFR: 8331947: Preview creates checkbox for JEP-less preview feature

[Hannes Wallnöfer]

On Wed, 22 May 2024 08:39:12 GMT, Hannes Wallnöfer <hannesw at openjdk.org> wrote:

> Please review a simple patch to exclude preview visitor classes meant to support future preview features from the Preview API page. 
> 
> The test adds an sample element annotated with the new `PreviewFeature.Feature.LANGUAGE_MODEL` constant (which does not have a `@JEP` annotation) to make sure it is not listed in the Preview API page. The test itself does not have to be modified, as it would fail without the change in `PreviewAPIListBuilder.java`.

Note: this patch only removes the checkbox labeled "0: (Preview)" from the top of the Preview API page, but the preview visitor classes themselves are still contained in the page. I'm not sure they need to be, so this PR may see further updates.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/19344#issuecomment-2124777673