function debug_string( $notice, $theme ) {
  if ( 'Genesis' === $theme->name ) {
    return __( 'Enable update checks at Appearance → Customize → Theme Settings → Updates.', 'genesis' );
  }
  if ( 'genesis' === $theme->template ) {
    return __( 'Auto-updates are not available for this theme.', 'genesis' );
  }
  return $notice;
}