code: def test_content(self, data, trigger_event):
      # set up engine
      gb_count_dict = {}
  
      def _train_func(engine, batch):
          # store garbage collection counts
          if (
              trigger_event == Events.EPOCH_COMPLETED
              or trigger_event.lower() == "epoch"
          ):
              if (
                  engine.state.iteration % engine.state.epoch_length
                  == 1
              ):
                  gb_count_dict[engine.state.epoch] = gc.get_count()
          elif trigger_event.lower() == "iteration":
              gb_count_dict[engine.state.iteration] = gc.get_count()
  
      engine = Engine(_train_func)
  
      # set up testing handler
      dataset = Dataset(data, transform=None)
      data_loader = torch.utils.data.DataLoader(dataset, batch_size=1)
      GarbageCollector(
          trigger_event=trigger_event, log_level=30
      ).attach(engine)
  
      engine.run(data_loader, max_epochs=5)
  
      first_count = 0
      for iter, gb_count in gb_count_dict.items():
          # At least one zero-generation object is collected
          # self.assertGreaterEqual(gb_count[0], 0)
          if iter > 1:
              # Since we are collecting all objects from all generations manually at each call,
              # starting from the second call, there shouldn't be any 1st and 2nd
              # generation objects available to collect.
              self.assertEqual(gb_count[1], first_count)
              self.assertEqual(gb_count[2], first_count)
  
file_path: MONAI/tests/test_handler_garbage_collector.py
imports: from __future__ import annotations
  import gc
  import unittest
  from unittest import skipUnless
  import torch
  from ignite.engine import Engine
  from parameterized import parameterized
  from monai.config import IgniteInfo
  from monai.data import Dataset
  from monai.handlers import GarbageCollector
  from monai.utils import min_version, optional_import
label_desc: Use image node_id 1 for calling the TestHandlerGarbageCollector obj's underlying member method code with example usage: obj.test_content(data, trigger_event) without return types