Using UNC & file shares for SftpServer file storage.

I can't figure out how to make network shares work with SftpSshServer . It throws exceptions when I try something like this to define a User... Server.Users.Add("test", "password", @"Z:\") ...or any other possible variant of the directory path I can think of. The exception message is: System.ArgumentException: 'Existing path required. (Parameter 'virtualRootPath')'

Here I go again answering my own question... I figured this out! My use case was to have SftpSshServer have Azure File Shares or Blob storage be the storage backing for the Sftp user. I was able to map the Azure storage as a local network share and then mount the share in my application code, wrapping the server object instance. It works now like a charm. If there is sufficient interest, I'll post my solution here.