docs: def wait_for_zone_op(access_token, project, zone, name, interval=1.0):
      """Wait until a zone operation is finished.
  
      TODO: docstring"""
  
      assert isinstance(interval, (int, float))
      assert interval >= 0.1
      
      status = 'RUNNING'
      progress = 0
  
      LOGGER.info('Waiting for zone operation "%s" to finish...', name)
  
      while status != 'DONE':
  
          # print('\rRunning! Progress: %d %%' % progress, end='')
          r = requests.get('https://www.googleapis.com/compute/v1/'
                           'projects/%s/zones/%s/operations/%s?access_token=%s'
                           % (project, zone, name, access_token.access_token))
          r.raise_for_status()
  
          # print(r.status_code)
          #result = json.loads(r.content.decode('utf-8'))
          result = r.json()
          status = result['status']
          progress = result['progress']
  
          time.sleep(interval)
  
      LOGGER.info('Zone operation "%s" done!', name)