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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 todate(self):
 """ Calculates the corresponding day in the gregorian calendar. this is the main use case of this library. :return: Corresponding date in gregorian calendar. :rtype: :py:class:`datetime.date` """

        arr = get_gregorian_date_from_julian_day(self.tojulianday())
        return datetime.date(int(arr[0]), int(arr[1]), int(arr[2]))