code: def file_storage_option(args, run):
      """Add a file-storage observer to the experiment.
  
      The value of the arguement should be the
      base-directory to write the runs to
      """
      run.observers.append(FileStorageObserver(args))
  
imports: import json
  import os
  import os.path
  from pathlib import Path
  from typing import Optional
  import warnings
  from shutil import copyfile, SameFileError
  from sacred.commandline_options import cli_option
  from sacred.dependencies import get_digest
  from sacred.observers.base import RunObserver
  from sacred import optional
  from sacred.serializer import flatten
  from sacred.utils import PathType
label_desc: Use image node_id 1 for calling a global function with example usage: file_storage_option(args, run) without return types