code: def __init__(self):
      self.conf = None
      if "DGL_REG_CONF" in os.environ:
          current_dir = os.path.dirname(os.path.abspath(__file__))
          path = os.path.join(
              current_dir, "../../", os.environ["DGL_REG_CONF"]
          )
          with open(path, "r") as f:
              self.conf = json.load(f)
          if "INSTANCE_TYPE" in os.environ:
              instance_type = os.environ["INSTANCE_TYPE"]
          else:
              raise Exception(
                  "Must set both DGL_REG_CONF and INSTANCE_TYPE as env"
              )
          self.enabled_tests = self.conf[instance_type]["tests"]
      else:
          import logging
  
          logging.warning("No regression test conf file specified")
  
imports: import inspect
  import json
  import os
  import pickle
  import shutil
  import time
  import zipfile
  from functools import partial, reduce, wraps
  from timeit import default_timer
  import dgl
  import numpy
  import pandas
  import requests
  import torch
  from ogb.nodeproppred import DglNodePropPredDataset
  import traceback
  from _thread import start_new_thread
  import torch.multiprocessing
label_desc: Use image node_id 1 to create a new TestFilter object  with example: obj = TestFilter()