code: def __setitem__(self, key: str, value: Any) -> None:
      self.__cache[key] = value
      with open(ArgCache.cache_file_path(), "w") as f:
          f.write(json.dumps(self.__cache))
  
imports: import json
  import os
  from typing import Any
label_desc: Use image node_id 3 for calling the ArgCache obj's underlying member method code with example usage: obj.__setitem__(key, value) without return types