BP_Forums_Component::setup_components()

    public function setup_components() {

        // Always load the members component
        bbpress()->extend->buddypress->members = new BBP_BuddyPress_Members;

        // Create new activity class
        if ( bp_is_active( 'activity' ) ) {
            bbpress()->extend->buddypress->activity = new BBP_BuddyPress_Activity;
        }

        // Register the group extension only if groups are active
        if ( bbp_is_group_forums_active() && bp_is_active( 'groups' ) ) {
            bp_register_group_extension( 'BBP_Forums_Group_Extension' );
        }
    }