public function postFormatRecords(array &$records = NULL)
{
parent::postFormatRecords($records);
if (isset($records)) {
$propertyNames = $this->propertyNames;
if (!isset($propertyNames)) {
foreach ($this->assembledColumnNames as $propertyName => $index) {
$propertyNames[$index] = $propertyName;
}
}
array_unshift($records, $propertyNames);
}
}
