code: def test_stateless_timer(self):
      self.cleanup()
      trainer = self.setup_model()
      global_step_1 = trainer.global_step
      trainer = self.setup_model()
      global_step_2 = trainer.global_step
      trainer = self.setup_model()
      global_step_3 = trainer.global_step
      logging.info(
          f"Global steps : {global_step_1}, {global_step_2}, {global_step_3}"
      )
      assert global_step_3 > global_step_2 > global_step_1
      self.cleanup()
  
imports: import os
  import shutil
  import pytest
  import torch
  from omegaconf import OmegaConf
  from pytorch_lightning import Trainer
  from nemo.core import ModelPT
  from nemo.utils import logging
  from nemo.utils.exp_manager import CallbackParams, ExpManagerConfig, StatelessTimer, exp_manager
label_desc: Use image node_id 3 for calling the TestStatelessTimer obj's underlying member method code with example usage: obj.test_stateless_timer() without return types