code: def log_post_api_call(
      self, kwargs, response_obj, start_time, end_time
  ):
      print(
          f"Post-API Call - response object: {response_obj}; model: {kwargs['model']}"
      )
  
file_path: litellm/litellm/tests/test_router_fallbacks.py
imports: import sys, os, time
  import traceback, asyncio
  import pytest
  import litellm
  from litellm import Router
  from litellm.integrations.custom_logger import CustomLogger
label_desc: Use image node_id 2 for calling the MyCustomHandler obj's underlying member method code with example usage: obj.log_post_api_call(kwargs, response_obj, start_time, end_time) without return types