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https://issues.apache.org/jira/browse/TAP5-2489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14902635#comment-14902635
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Bob Harner commented on TAP5-2489:
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Svein, I just wanted to say that your understanding of what "required" _should_
mean is completely reasonable, and the javadocs should be updated to make it
very clear that Tapestry is using "required" here in a counterintuitive way. We
have done so elsewhere, such as with the "encoder" parameter of the Select
component.
> Palette component parameter availableLabel and selectedLabel should have
> required = false
> ------------------------------------------------------------------------------------------
>
> Key: TAP5-2489
> URL: https://issues.apache.org/jira/browse/TAP5-2489
> Project: Tapestry 5
> Issue Type: Wish
> Components: tapestry-core
> Affects Versions: 5.4
> Reporter: Svein
> Priority: Minor
> Labels: component
>
> Having value = "message:core-palette-available-label" and value =
> "message:core-palette-selected-label" then @Parameter(required = false) is
> better! My IDE gives me error when selectedLabel or availableLabel is skipped.
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