code: def test_time_meter(self):
      tps = TimeMeter()
      for i in range(10):
          tps.update(i)
      self.assertEqual(tps.n, 45)
      self.assertTrue(tps.avg > 1)
  
imports: import json
  import os
  import random
  import shutil
  import tempfile
  import unittest
  import numpy
  import torch
  from pytext.utils import recursive_map, round_seq, set_random_seeds
  from pytext.utils.data import align_slot_labels, merge_token_labels_to_slot, strip_bio_prefix, unkify
  from pytext.utils.distributed import get_shard_range
  from pytext.utils.file_io import chunk_file, PathManager
  from pytext.utils.meter import TimeMeter
  from pytext.utils.test import import_tests_module
label_desc: Use image node_id 6 for calling the UtilTest obj's underlying member method code with example usage: obj.test_time_meter() without return types