private function applyPrimaryKeyField(DataModel $model, \SimpleXMLElement &$headerSet, \SimpleXMLElement &$fieldSet, array &$allFields)
{
$keyField = $model->getKeyName();
$langDefs = $this->getFieldLabel($keyField);
$this->addString($langDefs['label']['key'], $langDefs['label']['value']);
$this->addString($langDefs['desc']['key'], $langDefs['desc']['value']);
$header = $headerSet->addChild('header');
$header->addAttribute('name', $keyField);
$header->addAttribute('type', 'RowSelect');
$header->addAttribute('label', $langDefs['label']['key']);
$header->addAttribute('sortable', 'true');
$header->addAttribute('tdwidth', '20');
$field = $fieldSet->addChild('field');
$field->addAttribute('name', $keyField);
$field->addAttribute('type', 'SelectRow');
unset($allFields[$keyField]);
}