LdapTools\AttributeConverter\ConvertWindowsGuid::toLdap PHP Method

    public function toLdap($guid)
    {
        $guid = strtolower($guid) === self::AUTO ? LdapUtilities::uuid4() : $guid;
        if (!LdapUtilities::isValidGuid($guid)) {
            throw new AttributeConverterException(sprintf('The value "%s" is not a valid GUID.', $guid));
        }
        $guid = (new GUID($guid))->toBinary();
        if ($this->getOperationType() == self::TYPE_SEARCH_TO) {
            $guid = implode('', preg_filter('/^/', '\\', str_split(bin2hex($guid), 2)));
        }
        return $guid;
    }