Jetpack::featured_images_enabled PHP Method

    public static function featured_images_enabled()
    {
        _deprecated_function(__METHOD__, 'jetpack-4.2');
        return current_theme_supports('post-thumbnails') ? '1' : '0';
    }

 public static function refresh_theme_data()
 {
     /**
      * Fires whenever a theme change is made.
      *
      * @since 3.8.1
      *
      * @param string featured_images_enabled
      * @param boolean Whether featured images are enabled or not
      */
     do_action('add_option_jetpack_featured_images_enabled', 'jetpack_featured_images_enabled', Jetpack::featured_images_enabled());
 }