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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 where(self, where: str) -> 'SASdata': """ This method returns a clone of the SASdata object, with the where attribute set. The original SASdata object is not affected. :param where: the where clause to apply :return: SAS data object """

        sd = SASdata(self.sas, self.libref, self.table, dsopts=dict(self.dsopts))
        sd.HTML = self.HTML
        sd.dsopts['where'] = where
        return sd