wicket-extensions/src/java/wicket/extensions/markup/html/repeater/data/table/HeadersToolbar.html

<wicket:panel>
	<tr class="headers">
		<span wicket:id="headers">
			<th wicket:id="header"><span wicket:id="label">[header-label]</span></th>
		</span>
	</tr>
</wicket:panel>