code: def inference(self, data, *args, **kwargs):
      return data
  
file_path: serve/examples/stateful/stateful_handler.py
imports: import logging
  from abc import ABC
  from typing import Dict
  from lru import LRU
  from ts.context import Context
  from ts.torch_handler.base_handler import BaseHandler
label_desc: Use image node_id 4 for calling the StatefulHandler obj's underlying member method code with example usage: obj.inference(data) and returns: data