docs: def hibernate(app):
      """Pause an experiment and remove costly resources."""
      backup(app)
  
      log("Scaling down the web servers...")
      subprocess.call("heroku ps:scale web=0" + " --app " + app, shell=True)
      subprocess.call("heroku ps:scale worker=0" + " --app " + app, shell=True)
      subprocess.call("heroku ps:scale clock=0" + " --app " + app, shell=True)
  
      log("Removing addons...")
      addons = [
          "heroku-postgresql",
          # "papertrail",
          "rediscloud",
      ]
      for addon in addons:
          subprocess.call(
              "heroku addons:destroy {} --app {} --confirm {}".format(
                  addon,
                  app,
                  app
              ),
              shell=True,
          )