function custom_bbp_list_forums() {

        // Defaults and arguments
        $args = array (
            'before'            => '<ul class="bbp-forums-list">',
            'after'             => '</ul>',
            'link_before'       => '<li class="bbp-forum">',
            'link_after'        => '</li>',
            'count_before'      => '',
            'count_after'       => '',
            'count_sep'         => '',
            'separator'         => '',
            'forum_id'          => '',
            'show_topic_count'  => true,
            'show_reply_count'  => true,
        );

        bbp_list_forums( $args );
    }