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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 account_xdr_object(self):
 """Create PublicKey XDR object via public key bytes. :return: Serialized XDR of PublicKey type. """

        return Xdr.types.PublicKey(Xdr.const.KEY_TYPE_ED25519,
                                   self.verifying_key.to_bytes())