code: def completed_event(self, stop_time, result):
      self.run_entry["stop_time"] = stop_time.isoformat()
      self.run_entry["result"] = result
      self.run_entry["status"] = "COMPLETED"
  
      self.save_json(self.run_entry, "run.json")
  
imports: import json
  import os
  import os.path
  import re
  from typing import Optional
  from sacred.commandline_options import cli_option
  from sacred.dependencies import get_digest
  from sacred.observers.base import RunObserver
  from sacred.serializer import flatten
  from sacred.utils import PathType
label_desc: Use image node_id 16 for calling the GoogleCloudStorageObserver obj's underlying member method code with example usage: obj.completed_event(stop_time, result) without return types