def remove_periodic_callback(self, callback):
        self._remove(callback, self._periodic_callbacks)
Test smoothing part of ExponentialSmoothing.
dataset/ETHPy150Open bokeh/bokeh/bokeh/util/tornado.py/_CallbackGroup.remove_periodic_callback--crossover with--dataset/ETHPy150Open T-002/pycast/pycast/tests/methodtest.py/HoltMethodTest.smoothing_test