I need to import a lot of users from a wordpress installation into C5. As there's no import function I can find in the dash and the only import tool I can find is for pre-5.7 it seems I need to make a small block to do it.

RegistrationService::create( array $data ) seems to be the method to use (?) though there's no explanation of what $data should contain. Where do I need to look for this or does anyone already know what form the array should take?

Thanks