@Deprecated(forRemoval = true)
    @SuppressWarnings("removal")
    public static DocumentDeserializer create6(DocumentTypeManager manager, GrowableByteBuffer buf) {
        return new VespaDocumentDeserializer6(manager, buf);
    }
Creates a de-serializer for the 6.x document format.
This format is an extension of the 4.2 format.
Deprecated, use createHead instead.
document/src/main/java/com/yahoo/document/serialization/DocumentDeserializerFactory.java