private function parseUnresolved0($text, ParsePosition $position)
{
$context = new DateTimeParseContext($this);
$pos = $position->getIndex();
$pos = $this->printerParser->parse($context, $text, $pos);
if ($pos < 0) {
$position->setErrorIndex(~$pos);
// index not updated from input
return null;
}
$position->setIndex($pos);
// errorIndex not updated from input
return $context;
}
