code: def resource_event(self, filename):
      store_path, md5sum = self.find_or_save(
          filename, self.resource_dir
      )
      self.run_entry["resources"].append([filename, store_path])
      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 19 for calling the GoogleCloudStorageObserver obj's underlying member method code with example usage: obj.resource_event(filename) without return types