How to group headers of PrimeFaces dataTable with dynamic columns -

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i using modified dynamic columns primefaces showcase: dynamic columns. task add column header grouping here primefaces showcase: group. trying start incrementaly, small code doesn't work (no header shown):

<p:datatable id="resulttable" var="result" value="#{mybean.searchresults}">       <p:columngroup type="header">         <p:row>             <ui:repeat value="#{mybean.columns}" var="column" >                 <p:column headertext="#{column.header}" />             </ui:repeat>         </p:row>     </p:columngroup>     <p:columns value="#{mybean.columns}" var="column" columnindexvar="colindex">         <h:outputtext value="#{result[column.property]}"/>     </p:columns> </p:datatable>

primefaces version 3.4.1

grouping dynamic columns @ least supported in newer pf version. columns under same group. there must additional code. check showcase link point to

(ps, remove answer later on, since interpreted question wrong


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