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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 _Verify(self):
 """Verify that all of the expected calls have been made. Raises: ExpectedMethodCallsError: if there are still more method calls in the expected queue. """


    # If the list of expected calls is not empty, raise an exception
    if self._expected_calls_queue:
      # The last MultipleTimesGroup is not popped from the queue.
      if (len(self._expected_calls_queue) == 1 and
          isinstance(self._expected_calls_queue[0], MultipleTimesGroup) and
          self._expected_calls_queue[0].IsSatisfied()):
        pass
      else:
        raise ExpectedMethodCallsError(self._expected_calls_queue)