6 uses of MAILCHIMP_LISTTYPE_REQUIRED in Mailchimp 7

mailchimp_admin_settings_submit in ./mailchimp.admin.inc

Serialize the saved lists and notify users of the need to rebuild the user's table.

mailchimp_block_info in ./mailchimp.module

Implements hook_block_info.

mailchimp_subscribe_auth_form_submit in ./mailchimp.module

Submit handler to add users to lists when editing/creating a user

mailchimp_user_insert in ./mailchimp.module

Implements hook_user_insert().

_mailchimp_get_available_lists in ./mailchimp.module

Get all of the lists that the given user can subscribe to.

_mailchimp_get_required_lists in ./mailchimp.module

Return an array of all required lists.