protected ValueUpdate readTensorAddUpdate(DataType type) {
        throw new DeserializationException("Cannot deserialize TensorAddUpdate, not implemented for this document format version");
    }
Class used for de-serializing documents on the Vespa 6.x document format.

@author baldersheim
document/src/main/java/com/yahoo/document/serialization/VespaDocumentDeserializer6.java