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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 intersection(self):
 """Return the intersection of all flags in this dict Returns ------- intersection : `DataQualityFlag` a new `DataQualityFlag` who's active and known segments are the intersection of those of the values of this dict """

        isegs = reduce(operator.and_, self.values())
        isegs.name = ' & '.join(self.keys())
        return isegs