function wp_maybe_transition_site_statuses_on_update( $new_site, $old_site = null ) {
  $site_id = $new_site->id;

  // Use the default values for a site if no previous state is given.
  if ( ! $old_site ) {
    $old_site = new WP_Site( new stdClass() );
  }

  if ( $new_site->spam !== $old_site->spam ) {
    if ( '1' === $new_site->spam ) {

      
/**
 * Fires when the 'spam' status is added to a site.
 *
 * @since MU (3.0.0)
 *
 * @param int $site_id Site ID.
 */
      do_action( 'make_spam_blog', $site_id );
    } else {

      
/**
 * Fires when the 'spam' status is removed from a site.
 *
 * @since MU (3.0.0)
 *
 * @param int $site_id Site ID.
 */
      do_action( 'make_ham_blog', $site_id );
    }
  }

  if ( $new_site->mature !== $old_site->mature ) {
    if ( '1' === $new_site->mature ) {

      
/**
 * Fires when the 'mature' status is added to a site.
 *
 * @since 3.1.0
 *
 * @param int $site_id Site ID.
 */
      do_action( 'mature_blog', $site_id );
    } else {

      
/**
 * Fires when the 'mature' status is removed from a site.
 *
 * @since 3.1.0
 *
 * @param int $site_id Site ID.
 */
      do_action( 'unmature_blog', $site_id );
    }
  }

  if ( $new_site->archived !== $old_site->archived ) {
    if ( '1' === $new_site->archived ) {

      
/**
 * Fires when the 'archived' status is added to a site.
 *
 * @since MU (3.0.0)
 *
 * @param int $site_id Site ID.
 */
      do_action( 'archive_blog', $site_id );
    } else {

      
/**
 * Fires when the 'archived' status is removed from a site.
 *
 * @since MU (3.0.0)
 *
 * @param int $site_id Site ID.
 */
      do_action( 'unarchive_blog', $site_id );
    }
  }

  if ( $new_site->deleted !== $old_site->deleted ) {
    if ( '1' === $new_site->deleted ) {

      
/**
 * Fires when the 'deleted' status is added to a site.
 *
 * @since 3.5.0
 *
 * @param int $site_id Site ID.
 */
      do_action( 'make_delete_blog', $site_id );
    } else {

      
/**
 * Fires when the 'deleted' status is removed from a site.
 *
 * @since 3.5.0
 *
 * @param int $site_id Site ID.
 */
      do_action( 'make_undelete_blog', $site_id );
    }
  }

  if ( $new_site->public !== $old_site->public ) {

    
/**
 * Fires after the current blog's 'public' setting is updated.
 *
 * @since MU (3.0.0)
 *
 * @param int    $site_id   Site ID.
 * @param string $is_public Whether the site is public. A numeric string,
 *                          for compatibility reasons. Accepts '1' or '0'.
 */
    do_action( 'update_blog_public', $site_id, $new_site->public );
  }
}