code: def FirstEventTimestamp(self):
      return 0
  
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 3 for calling the _FakeAccumulator obj's underlying member method code with example usage: obj.FirstEventTimestamp() and returns: int