Source Reference:

• Component: bbPress :: bbp-forum

  File: /bbp-includes/bbp-forum-template.php :: Trac Source Line: 1710

  		$feed_links = ( !empty( $feed ) ) ? bbp_get_forum_topics_feed_link ( $forum_id ) . bbp_get_forum_replies_feed_link( $forum_id ) : '';
  
  		// Add the 'view all' filter back
  		add_filter( 'bbp_get_forum_permalink', 'bbp_add_view_all' );
  
  		// Combine the elements together
  		$retstr = $before . $retstr . $after;
  
  		// Return filtered result
  		return apply_filters( 'bbp_get_single_forum_description', $retstr, $args );
  	}
  
  /** Feeds *********************************************************************/
  
  /**
   * Output the link for the forum feed
   *
   * @since bbPress (r3172)
   *
   * @param type $forum_id Optional. Forum ID.