code: def _get_event_id(object_type: str) -> str:
      
      key = _keys.event_counter(object_type)
      DB.watch(key, pipeline=True)
      count = DB.get_value(key)
      DB.increment(key)
      DB.execute()
      if count is None:
          count = 0
      return '{}_event_{:08d}'.format(object_type, int(count))
docs: Return an event key for the event on the object type.
  
      This must be a unique event id for the object.
  
      Args:
          object_type (str): Type of object
  
      Returns:
          str, event id