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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 prune(self):
 """ Prune the branch of empty nodes. """

        pruned = []
        for c in self.children:
            c.prune()
            if c.isempty(False):
                pruned.append(c)
        for p in pruned:
            self.children.remove(p)