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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def Reload(self):
 """Loads all events added since the last call to `Reload`. If `Reload` was never called, loads all events in the file. Returns: The `EventAccumulator`. """

    with self._generator_mutex:
      for event in self._generator.Load():
        self._ProcessEvent(event)
    return self