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https://issues.apache.org/jira/browse/WICKET-4389?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martin Grigorov resolved WICKET-4389.
-------------------------------------

       Resolution: Fixed
    Fix Version/s: 6.0.0
                   1.5.5
         Assignee: Martin Grigorov

It is not used anymore internally by Wicket anymore but may be used by user 
applications. For example if an application do not want to return error/failure 
state in Ajax response then it can return this IRequestHandler in 
IRequestCycleListener#onException().

EmptyAjaxRequestTarget was used in the request handling code in 1.4.x but it is 
no more in use with the new impl in 1.5.x
                
> Is there any use for EmptyAjaxRequestHandler?
> ---------------------------------------------
>
>                 Key: WICKET-4389
>                 URL: https://issues.apache.org/jira/browse/WICKET-4389
>             Project: Wicket
>          Issue Type: Task
>          Components: wicket
>    Affects Versions: 1.5.4
>         Environment: any
>            Reporter: Ernesto Reinaldo Barreiro
>            Assignee: Martin Grigorov
>            Priority: Trivial
>              Labels: documentation
>             Fix For: 1.5.5, 6.0.0
>
>
> Hi,
> While trying to learn more about new request cycle implementation I came 
> across class EmptyAjaxRequestHandler. Unless my IDE is fulling me somehow, 
> this class does not seem to be referenced anywhere else on the code. Is it 
> meant to have some use for  framework users? If so, a bit of explanation on 
> java doc would be nice.
> Regards,
> Ernesto

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