def fetch_file_contents(remote_path)
      result = backend.file(remote_path)
      if result.exist? && result.file?
        result.content
      else
        nil
      end
    end
def fetch_file_contents(remote_path)
      result = backend.file(remote_path)
      if result.exist? && result.file?
        result.content
      else
        nil
      end
    end
Retrieve the contents of a remote file. Returns nil
 if the file didn't exist or couldn't be read.