code: def __new__(cls, name, bases, dict):
      # decorate all test cases
      for k, v in dict.items():
          if k.startswith("test_") and hasattr(v, "__call__"):
              dict[k] = cls.launch_bps(v)
  
      for k, v in cls.BASE_ENV.items():
          os.environ[k] = v
      os.environ["NVIDIA_VISIBLE_DEVICES"] = "0"
      os.environ["DMLC_WORKER_ID"] = "0"
      os.environ["DMLC_ROLE"] = "worker"
      os.environ["BYTEPS_THREADPOOL_SIZE"] = "4"
      os.environ["BYTEPS_FORCE_DISTRIBUTED"] = "1"
      os.environ["BYTEPS_LOCAL_RANK"] = "0"
      os.environ["BYTEPS_LOCAL_SIZE"] = "1"
      return type(name, bases, dict)
  
file_path: byteps/tests/meta_test.py
imports: import copy
  import time
  import os
  import subprocess
  import sys
  import threading
  import byteps.mxnet
label_desc: Use image node_id 1 for calling the MetaTest obj's underlying member method code with example usage: obj.__new__(cls, name, bases, dict) and returns: type