RFR: 8281284 : Write JSlider accessibility test [v2]

[Phil Race]

On Fri, 4 Feb 2022 22:34:47 GMT, lawrence.andrews <duke at openjdk.java.net> wrote:

>> This testcase covers both old and new api ( api added in jdk17  getAccessibleAction(), getAccessibleActionCount() , getAccessibleActionDescription )
>> 
>> @shurymury 
>> @savoptik
>
> lawrence.andrews has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Added @key headful

Marked as reviewed by prr (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/7355