Caching.MarkAsUsed
static function MarkAsUsed(url: string, version: int): bool;
static bool MarkAsUsed(string url, int version);
static def MarkAsUsed(url as string, version as int) as bool
Description

Bumps the timestamp of a cached file to be the current time.

This allows you to keep files in the cache even if you are not explicitly loading them. Returns true if the url is cached.