Source Reference:

• Component: bbPress :: bbp-forum

  File: /bbp-includes/bbp-forum-template.php :: Trac Source Line: 788

  	 * @uses bbp_get_forum_id() To get the forum id
  	 * @uses bbp_get_forum_last_topic_id() To get the forum's last topic id
  	 * @uses bbp_get_topic_permalink() To get the topic's permalink
  	 * @uses apply_filters() Calls 'bbp_get_forum_last_topic_permalink' with
  	 *                        the topic link and forum id
  	 * @return string Permanent link to topic
  	 */
  	function bbp_get_forum_last_topic_permalink( $forum_id = 0 ) {
  		$forum_id = bbp_get_forum_id( $forum_id );
  		return apply_filters( 'bbp_get_forum_last_topic_permalink', bbp_get_topic_permalink( bbp_get_forum_last_topic_id( $forum_id ) ), $forum_id );
  	}
  
  /**
   * Return the author ID of the last topic of a forum
   *
   * @since bbPress (r2625)
   *
   * @param int $forum_id Optional. Forum id
   * @uses bbp_get_forum_id() To get the forum id
   * @uses bbp_get_forum_last_topic_id() To get the forum's last topic id