/**
* Get the collection data to display.
*
* @return void
* @access public
*/
public function getCollectionRecord()
{
global $interface;
parent::getCollectionRecord();
$interface->assign('collDateDescription', $this->getDateDescription());
$interface->assign('collExtent', $this->getExtent());
// Send back the template name:
return 'RecordDrivers/Hierarchy/collection-record.tpl';
}