code: def setUp(self):
      super().setUp()
      self.stubs = tf.compat.v1.test.StubOutForTesting()
  
      self.stubs.Set(
          event_accumulator, "EventAccumulator", _GetFakeAccumulator
      )
  
imports: import os
  import os.path
  import shutil
  import tensorflow
  from tensorboard.backend.event_processing import event_accumulator
  from tensorboard.backend.event_processing import event_multiplexer
label_desc: Use image node_id 1 for calling the EventMultiplexerTest obj's underlying member method code with example usage: obj.setUp() without return types