custom facelets tag: render children

Hi i want to implement something like this:

<a:customTable>
  <a:customColumn>
  <a:customColumn>
<a:customTable>

where customTable is a facelets tag with no java code, only a xhtml file which is registered in the facelets taglib. This tag just has to wrapp the body in a common t:datatable with a pager as footer and some styling. It would be very nice for me, because that will avoid a lot of duplicated jsp table code.

some guesses?

thanks