Connector::checkUpdateLinks

static function checkUpdateLinks($links)
{
	$useCodes = static::getUseCodes();
	$useGroups = static::getUseGroups();

	$locationArgName = 	'$links['.static::DB_LOCATION_FLAG.']';
	$groupArgName = 	'$links['.static::DB_GROUP_FLAG.']';

	if (isset($links[static::DB_LOCATION_FLAG]) && is_array($links[static::DB_LOCATION_FLAG]))
	{
		if($useCodes)
			$links[static::DB_LOCATION_FLAG] = Assert::expectArrayOfUniqueStringNotNull($links[static::DB_LOCATION_FLAG], $locationArgName);
		else
			$links[static::DB_LOCATION_FLAG] = Assert::expectArrayOfUniqueIntegerNotNull($links[static::DB_LOCATION_FLAG], $locationArgName);
	}

	if (isset($links[static::DB_GROUP_FLAG]) && is_array($links[static::DB_GROUP_FLAG]))
	{
		if(!$useGroups)
			Assert::announceNotSupported(Loc::getMessage('SALE_LOCATION_CONNECTOR_ENTITY_DOESNT_SUPPORT_GROUPS'));

		if($useCodes)
			$links[static::DB_GROUP_FLAG] = Assert::expectArrayOfUniqueStringNotNull($links[static::DB_GROUP_FLAG], $groupArgName);
		else
			$links[static::DB_GROUP_FLAG] = Assert::expectArrayOfUniqueIntegerNotNull($links[static::DB_GROUP_FLAG], $groupArgName);
	}

	return $links;
}