code: def _process_event(self):
      while True:
          if self._shutdown:
              break
          for event in self._generator.Load():
              self._process_tb_event(event)
          time.sleep(1)
  
imports: from tensorboard.backend.event_processing.directory_watcher import DirectoryWatcher
  from tensorboard.backend.event_processing import event_file_loader
  import tensorflow
  from tensorboard.util import tensor_util
  import time
  import threading
  from pathlib import Path
  import logging
  import os
  import weakref
  import queue
  from typing import Any
  from aim import Audio, Image, Distribution
label_desc: Use image node_id 4 for calling the TensorboardFolderTracker obj's underlying member method code with example usage: obj._process_event() without return types