ChunkDownloader with authentication

Hey all,

We are trying to implement token authentication with Chunk Downloader, and I am wondering if I can somehow get access to the FString Urls, or Fstring Filename or something where I can add my token string to the end.

So when Chunkdownloader generates the URL for me it will have the my Token String attached to it in the end.
I did manage to test it out digging through the code and adding the Token to the end of urls, but I do not want to mess around with Engine code as most of the properties are private.

Any advice would be highly appreciated.