public function importInstance($record, CsvImportProfile $profile)
{
if (array_key_exists('sku', $record)) {
$instance = Product::getInstanceBySKU($record['sku']);
$id = $instance ? $instance->getID() : 0;
if ($this->allowOnly == self::CREATE && $id > 0) {
throw new Exception('Record exists');
}
if ($this->allowOnly == self::UPDATE && $id == 0) {
throw new Exception('Record not found');
}
} else {
// if identified by smth else what then?
}
return parent::importInstance($record, $profile);
}
