code: def deserialize(cls, serialized):
          ''' Create a PublicKey from a base64 encoded bytes.
          :return: a PublicKey
          '''
          return PublicKey(
              nacl.public.PublicKey(serialized,
                                    encoder=nacl.encoding.Base64Encoder)f deserialize(cls, serialized):
          ''' Create a PublicKey from a base64 encoded bytes.
          :return: a PublicKey
          '''
          return PublicKey(
              nacl.public.PublicKey(serialized,
                                    encoder=nacl.encoding.Base64Encoder))
docs: Create a PublicKey from a base64 encoded bytes.
          :return: a PublicKey