code: def test_multiple_workers(self: TensorBoardLoggerTest) -> None:
      config = get_pet_launch_config(2)
      launcher.elastic_launch(
          config, entrypoint=self._test_distributed
      )()
  
file_path: tnt/tests/utils/loggers/test_tensorboard.py
imports: from __future__ import annotations
  import os
  import tempfile
  import unittest
  from unittest.mock import Mock, patch
  import torch.distributed.launcher
  from tensorboard.backend.event_processing.event_accumulator import EventAccumulator
  from torch import distributed
  from torchtnt.utils.loggers.tensorboard import TensorBoardLogger
  from torchtnt.utils.test_utils import get_pet_launch_config
label_desc: Use image node_id 6 for calling the TensorBoardLoggerTest obj's underlying member method code with example usage: obj.test_multiple_workers() without return types