Gets next week day

        :param including_today: If today is sunday and requesting next sunday
        :return: Date of next monday, tuesday ..

def get_next_weekday(self, including_today=False):
        """Gets next week day

        :param including_today: If today is sunday and requesting next sunday
        :return: Date of next monday, tuesday ..
        """
        weekday = self.date_time.weekday()
        return Weekday.get_next(weekday, including_today=including_today)