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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 to_description_dict(self):
 """ You might need keys below in some situation - caCertificateId - previousOwnedBy """

        return {
            'certificateArn': self.arn,
            'certificateId': self.certificate_id,
            'status': self.status,
            'certificatePem': self.certificate_pem,
            'ownedBy': self.owner,
            'creationDate': self.creation_date,
            'lastModifiedDate': self.last_modified_date,
            'transferData': self.transfer_data
        }