code: def completed_event(self, stop_time, result):
      self.run_entry["stop_time"] = stop_time
      self.run_entry["result"] = flatten(result)
      self.run_entry["status"] = "COMPLETED"
      self.final_save(attempts=10)
  
imports: from typing import Optional, Union
  import mimetypes
  import os.path
  import pickle
  import re
  import sys
  import time
  from tempfile import NamedTemporaryFile
  import warnings
  import sacred.optional
  from sacred.commandline_options import cli_option
  from sacred.dependencies import get_digest
  from sacred.observers.base import RunObserver
  from sacred.observers.queue import QueueObserver
  from sacred.serializer import flatten
  from sacred.utils import ObserverError, PathType
  import pkg_resources
label_desc: Use image node_id 8 for calling the MongoObserver obj's underlying member method code with example usage: obj.completed_event(stop_time, result) without return types