code: def save_cout(self):
      binary_data = self.cout[self.cout_write_cursor :].encode("utf-8")
      key = gcs_join(self.dir, "cout.txt")
      blob = self.bucket.blob(key)
      blob.upload_from_string(binary_data, content_type="text/plain")
      self.cout_write_cursor = len(self.cout)
  
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 14 for calling the GoogleCloudStorageObserver obj's underlying member method code with example usage: obj.save_cout() without return types