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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 to_json(self, pretty=True):
 """ to_json will call to_dict then dumps into json format """

        data_dict = self.to_dict()
        if pretty:
            return json.dumps(
                data_dict, sort_keys=True, indent=2)
        return json.dumps(data_dict, sort_keys=True)