SearchContentBuilder::save

protected function save($entityID, SearchMap $map);

protected function parseCustomerNumber($str, $template)
{
	$regex = $template !== ''
		? '/^'.str_replace(array('%NUMBER%', ' '), array('\s*(.+)\s*', '\s*'), $template).'$/'
		: '/(?:#|Nr.?)\s*(.+)/';

	if(preg_match($regex, $str, $m) === 1 && isset($m[1]))
	{
		return $m[1];
	}
	return '';
}