<thead xmlns:t="http://tapestry.apache.org/schema/tapestry_5_3.xsd" xml:space="default">
<tr data-inplace-grid-links="${inplaceGridLinks}">
    <th t:id="loop" t:type="Loop" source="columnNames" value="columnName" formstate="none"
        index="index" t:mixins="rendernotification">
        <t:delegate to="blockForColumn"/>
        <t:block id="standardHeader">
            <a t:id="sort" rel="nofollow">${columnModel.label}</a>
        </t:block>
    </th>
</tr>
</thead>
