private function resolveCompareColumnName(Row $row, $name, $index = 1)
{
if (!isset($row[$name])) {
return $name;
}
$newName = $name . '#' . (string) $index++;
if (!isset($row[$newName])) {
return $newName;
}
return $this->resolveCompareColumnName($row, $name, $index);
}