code: def get_initial_session():
      last_session_file = _sessions_dir("_last_session")
      if not os.path.exists(last_session_file):
          return new_session()
      with open(last_session_file, "r") as f:
          last_session = f.read().strip()
      return load_session(last_session)
  
imports: from model import ExLlama, ExLlamaCache, ExLlamaConfig
  from tokenizer import ExLlamaTokenizer
  from generator import ExLlamaGenerator
  import time
  import torch
  import os
  import json
  import uuid
label_desc: Use image node_id 3 for calling a global function with example usage: get_initial_session() and returns: load_session, new_session