Regcode/OG Issue - Need D7 Equivalent of og_all_groups_options()

Question

I'm trying to use the Registration codes module to automatically assign users to an organic group when they login with a registration code.

For Drupal 7, it appears that the Registration codes module is still using a Drupal 6 function (og_all_groups_options()) that is supposed to list all organic groups on a form.

I need to know the D7 equivalent of this function; I can't seem to find it.
Do you have a suggestion for how I could print out a multi-select option list of organic groups like og_all_groups_options() did?

Answer 1

The closest one seems to be og_get_all_group() in og.module.