/**
* Handles setting pages that are always to be revalidated for freshness by any cache.
*
* @param int $last_modified Timestamp in seconds
*
* @return $this
*/
public function exitIfNotModifiedSince($last_modified)
{
self::preventMultipleCaching();
self::$cached = true;
Header::exitIfNotModifiedSince($last_modified);
return $this;
}
