code: def deserialize(self, serialized):
          '''Deserialize a JSON macaroon depending on the format.
  
          @param serialized the macaroon in JSON format.
          @return the macaroon object.
          '''
          deserialized = json.loads(serialized)
          if deserialized.get('identifier') is None:
              return self._deserialize_v2(deserialized)
          else:
              return self._deserialize_v1(deserializedf deserialize(self, serialized):
          '''Deserialize a JSON macaroon depending on the format.
  
          @param serialized the macaroon in JSON format.
          @return the macaroon object.
          '''
          deserialized = json.loads(serialized)
          if deserialized.get('identifier') is None:
              return self._deserialize_v2(deserialized)
          else:
              return self._deserialize_v1(deserialized)
docs: Deserialize a JSON macaroon depending on the format.
  
          @param serialized the macaroon in JSON format.
          @return the macaroon object.