Called by:

• Mobilizon.Federation.ActivityPub.Types.Actors.join (L152)
• Mobilizon.Federation.ActivityPub.Types.Actors.join (L166)
• Mobilizon.Federation.ActivityPub.Types.Actors.approve_if_default_role_is_member (L270)
• Mobilizon.Federation.ActivityPub.Types.Actors.approve_if_default_role_is_member (L280)