public function prepareTableValue(StdClass $data = null, DOMElement $wrapper = null, Entry $entry = null)
 {
     $result = (object) array('value' => null);
     if (isset($data->joined_id)) {
         try {
             $document = $wrapper->ownerDocument;
             $driver = Extension::load('field_join');
             $driver->addPublishHeaders($document);
             $joined = Entry::loadFromId($data->joined_id);
             $section = Section::loadFromHandle($joined->section);
             $wrapper->addClass('field-join');
             $wrapper->setValue($section->name);
             /*
             $more = $document->createElement('span');
             $more->addClass('more');
             $more->setValue(__('More'));
             $wrapper->appendChild($more);
             
             // Build data array:
             $content = $document->createElement('div');
             $more->appendChild($content);
             
             foreach ($section->layout as $column) {
             	foreach ($column->fieldsets as $fieldset) {
             		$group = $document->createElement('div');
             		$group->addClass('list');
             		$content->appendChild($group);
             		
             		if ($fieldset->name) $group->appendChild(
             			$document->createElement('h5', $fieldset->name)
             		);
             		
             		$list = $document->createElement('dl');
             		$group->appendChild($list);
             		
             		foreach ($fieldset->fields as $field_handle) {
             			$field = $section->fetchFieldByHandle($field_handle);
             			
             			$title = $document->createElement('dt', $field->{'publish-label'});
             			$list->appendChild($title);
             			$item = $document->createElement('dd');
             			$list->appendChild($item);
             			
             			$value = $field->prepareTableValue(
             				$joined->data()->{$field_handle},
             				$item, $joined
             			);
             		}
             	}
             }
             */
             return $wrapper;
         } catch (Exception $e) {
             // Keep the null value set above.
         }
     }
     return parent::prepareTableValue($result, $link, $entry);
 }