code: def enable_backups(self):
          
          self._client.post("{}/backups/enable".format(Instance.api_endpoint), model=self)
          self.invalidate()
          return True
docs: Enable Backups for this Instance.  When enabled, we will automatically
          backup your Instance's data so that it can be restored at a later date.
          For more information on Instance's Backups service and pricing, see our
          `Backups Page`_
  
          .. _Backups Page: https://www.linode.com/backups