public function topic_update( $topic_id = 0, $post = null ) {

		// Bail early if not a topic
		if ( get_post_type( $post ) !== bbp_get_topic_post_type() ) {
			return;
		}

		// Bail early if revisions are off
		if ( ! bbp_allow_revisions() || ! post_type_supports( bbp_get_topic_post_type(), 'revisions' ) ) {
			return;
		}

		$topic_id = bbp_get_topic_id( $topic_id );

		// Bail early if topic is by anonymous user
		if ( bbp_is_topic_anonymous( $topic_id ) ) {
			return;
		}

		// Action based on new status
		if ( bbp_is_topic_public( $post->ID ) ) {

			// Validate topic data
			$forum_id        = bbp_get_topic_forum_id( $topic_id );
			$topic_author_id = bbp_get_topic_author_id( $topic_id );

			$this->topic_create( $topic_id, $forum_id, array(), $topic_author_id );
		} else {
			$this->topic_delete( $topic_id );
		}
	}