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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 save(self):
 """ Save the relationship :return: self """

        props = self.deflate(self.__properties__)
        query = "MATCH ()-[r]->() WHERE id(r)={self} "
        for key in props:
            query += " SET r.{0} = {{{1}}}".format(key, key)
        props['self'] = self.id

        db.cypher_query(query, props)

        return self