Enhancement: Add Blazor IBrowserFile.RelativePath to interface

I would like to be able to access the file(s) that have been selected in the InputFile component from javascript to be able to do something like this:

URL.createobjecturl(file)

There is a lookup table in the underlying html/javascript element, but the Id of the file is internal. Is it possible to add the Id property to the IBrowserFile interface?

Or is there some other way that I can create an extension method for IBrowserFile so I can get to the URL.createobjecturl(file) underlying javascript call?