code: def put_group(self, filename: str, group: Dict[str, str]):
      pass
  
imports: import json
  import os
  import random
  from abc import ABC, abstractmethod
  from pathlib import Path
  from typing import Dict, Optional
  import hashlib
label_desc: Use image node_id 6 for calling the CacheManager obj's underlying member method code with example usage: obj.put_group(filename, group) without return types