function check_bbpress_components_add_schema() {
    if(class_exists( 'bbPress')) {
        if (bbp_is_forum_archive() || bbp_is_topic_archive() || bbp_is_single_forum() || bbp_is_single_topic() || bbp_is_single_reply() || bbp_is_single_view()) {
            add_filter('kleo_schema_org_type', function () {
                return 'DiscussionForumPosting';
            });
        }
    }
}
add_action('wp', 'check_bbpress_components_add_schema');