+ def upgrade_juju(
+ self, dry_run=False, reset_previous_upgrade=False,
+ upload_tools=False, version=None):
+ """Upgrade Juju on all machines in a model.
+
+ :param bool dry_run: Don't do the actual upgrade
+ :param bool reset_previous_upgrade: Clear the previous (incomplete)
+ upgrade status
+ :param bool upload_tools: Upload local version of tools
+ :param str version: Upgrade to a specific version
+
+ """
+ pass
+
+ def upload_backup(self, archive_path):