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https://issues.apache.org/jira/browse/TAP5-2252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13840375#comment-13840375
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Howard M. Lewis Ship commented on TAP5-2252:
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Can you elaborate on the use-case here?
> dom.scanner should support a cleanup callback
> ---------------------------------------------
>
> Key: TAP5-2252
> URL: https://issues.apache.org/jira/browse/TAP5-2252
> Project: Tapestry 5
> Issue Type: Improvement
> Components: tapestry-core
> Affects Versions: 5.4
> Reporter: Jochen Kemnade
>
> In addition to a selector and a create callback, dom.scanner should support a
> (probably optional) cleanup callback that is executed at
> events.zone.willUpdate.
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