code: def refinement_phase(params: dict, args: Namespace):
      mini_batch_m = params["mini_batch"]
      return orjson.dumps({"k_models": "k_models"}).decode("utf-8")
  
imports: import calendar
  import os
  import time
  import requests
  import json
  from typing import List, Dict
  import traceback
  import orjson
  from argparse import Namespace
  from shared_config import parse_config_arguments
  from torch.utils.data import Dataset
  import torch
label_desc: Use image node_id 9 for calling a global function with example usage: refinement_phase(params, args) and returns: orjson