How to let users clear their posts cache with WP Super Cache?

Last time I used this plugin, you had to flush the entire cache to do this:

add_action('save_post','custom_clear_wp_super_cache');

function custom_clear_wp_super_cache($post_id) {
    if (function_exists('wp_cache_clear_cache')) {wp_cache_clear_cache();}
}

There may (or may not) be a method of flushing the cache for a particular post now.