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https://issues.apache.org/jira/browse/WICKET-5748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14200253#comment-14200253
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Andrea Del Bene commented on WICKET-5748:
-----------------------------------------

Component HtmlHeaderResolver#WicketHeadContainer is used to add a placeholder 
for <wicket:head>. We could change it from to TransparentWebMarkupContainer to 
simply WebMarkupContainer. After all we don't have components inside  
<wicket:head> right?
Tested and all test pass.

> StackOverflowError while trying to get the Markup of WicketHeadContainer
> ------------------------------------------------------------------------
>
>                 Key: WICKET-5748
>                 URL: https://issues.apache.org/jira/browse/WICKET-5748
>             Project: Wicket
>          Issue Type: Bug
>          Components: wicket
>    Affects Versions: 7.0.0-M4
>            Reporter: Martin Grigorov
>            Assignee: Andrea Del Bene
>         Attachments: WICKET-5748.zip, stackoverflow-getMarkup.png
>
>
> I'm migrating our main app to Wicket 7.x
> One of the tests fail with StackOverflowError.
> Attaching a debugger shows that there are multiple instances of 
> HtmlHeaderResolver$WicketHeadContainer with the same id.
> See the attached screenshot.



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