In processCIIEncodingAlgorithm, it checks whether a _primitiveHandler or
_algorithmHandler is registered. If not then it calls
processBuiltInEncodingAlgorithmAsCharacters. I didn't register either
of these but tried getting at the data through the
AttributesHolder.getAlgorithmData() and it wasn't there.
I think the logic is a bit off though. Ie I don't really want the
callbacks, but I do want the data in primitive form.. are callbacks
required or did I drop through a case?