code: def set_cache(self, key, value, **kwargs):
      self.cache_dict[key] = value
      if "ttl" in kwargs:
          self.ttl_dict[key] = time.time() + kwargs["ttl"]
  
imports: import litellm
  import time, logging
  import json, traceback, ast, hashlib
  from typing import Optional, Literal, List, Union, Any
  from openai._models import BaseModel
label_desc: Use image node_id 2 for calling the InMemoryCache obj's underlying member method code with example usage: obj.set_cache(key, value) without return types