Item::normalizeDocumentId

static function normalizeDocumentId($documentId, string $docType = null)
{
	if ($docType && is_numeric($documentId))
	{
		$documentId = $docType . '_' . $documentId;
	}

	$documentInfo = static::GetDocumentInfo($documentId);

	return parent::normalizeDocumentIdInternal(
		$documentId,
		$documentInfo['TYPE'],
		$documentInfo['TYPE_ID']
	);
}