code: def load_old_files(files):
      with warnings.catch_warnings():
          warnings.simplefilter("ignore", category=UserWarning)
          return dgl.load_graphs(
              os.path.join(os.path.dirname(__file__), files)
          )
  
imports: import os
  import tempfile
  import time
  import unittest
  import warnings
  import backend
  import dgl
  import dgl.ndarray
  import numpy
  import pytest
  import scipy
  from dgl.data.utils import load_labels, load_tensors, save_tensors
label_desc: Use image node_id 8 for calling a global function with example usage: load_old_files(files) and returns: dgl