/**
* @param mixin $row
* @param \Latte\Runtime\CachingIterator $iterator
* @return mixin
*/
public function getRowIdentifier($row, \Latte\Runtime\CachingIterator $iterator)
{
if ($this->rowIdentifierCallback === NULL) {
return $iterator->key();
}
return Callback::invokeArgs($this->rowIdentifierCallback, array($row));
}
