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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 smoothed(self, iterations=1):
 """ Return a smoothed copy of this histogram Parameters iterations : int, optional (default=1) The number of smoothing iterations Returns ------- hist : asrootpy'd histogram The smoothed histogram """

        copy = self.Clone(shallow=True)
        copy.Smooth(iterations)
        return copy