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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 solarReturn(self, year):
 """ Returns this chart's solar return for a given year. """

        sun = self.getObject(const.SUN)
        date = Datetime('{0}/01/01'.format(year),
                        '00:00',
                        self.date.utcoffset)
        srDate = ephem.nextSolarReturn(date, sun.lon)
        return Chart(srDate, self.pos, hsys=self.hsys)