Is it possible to store the file under a different name on disk?

[burzum]

I would like to store the file on disk using a different name, the uuid without the strings and without extension. Is there any easy way to do this? I found the PathGenerator which I'm already use to generate a different path, but I can't find anything about customizing the file name on disk. When sending the file later I want to use the original file name under which it was uploaded. So what is the most easy way to get this done without changing a lot code of the library itself if possible?