code: def tearDown(self):
      self.stubs.CleanUp()
  
imports: import os
  import os.path
  import queue
  import shutil
  import tensorflow
  from tensorboard.backend.event_processing import plugin_event_accumulator
  from tensorboard.backend.event_processing import plugin_event_multiplexer
  from tensorboard.util import test_util
label_desc: Use image node_id 2 for calling the EventMultiplexerTest obj's underlying member method code with example usage: obj.tearDown() without return types