filter for private groups plugin

Great plugin !

I am author of the bbp private groups plugin. This restricts forums to certain users, letting you create forum A with users X and forum b with users Y.

I want to add a filter so that sites can run both our plugins.

I therefore need to filter the recipients list to just those that can see the forum of a new topic or reply.

I am pretty sure that if I hook to these two filters to reduce the recipients list to just those can that see a topic or reply’s forum, then the task is done, but can you confirm that filtering these two will fix this, and I don’t need any further hooks

$recipients = apply_filters( 'bbpress_topic_notify_recipients', $recipients, $topic_id, $forum_id );

$recipients = apply_filters( 'bbpress_reply_notify_recipients', $recipients, $reply_id, $topic_id, $forum_id );

Regards

Robin