def stat(self, path):
return SFTP_OP_UNSUPPORTED<EOL>
Return an `.SFTPAttributes` object for a path on the server, or an
error code.  If your server supports symbolic links (also known as
"aliases"), you should follow them.  (`lstat` is the corresponding
call that doesn't follow symlinks/aliases.)

:param str path:
    the requested path (relative or absolute) to fetch file statistics
    for.
:return:
    an `.SFTPAttributes` object for the given file, or an SFTP error
    code (like ``SFTP_PERMISSION_DENIED``).