requestFrame.fset(Constants.VINCI_COMMAND, Constants.ANNOTATE);
// serialize CAS (including type system)
CASMgr cas = (CASMgr) aCAS;
CASCompleteSerializer serializer = Serialization.serializeCASComplete(cas);
requestFrame.fsetTrueBinary("BinaryCAS", SerializationUtils.serialize(serializer));
AFrame responseFrame = (AFrame) mVinciClient.sendAndReceive(requestFrame, mTimeout);
// deserialize CAS from response frame
byte[] responseCasBytes = responseFrame.fgetTrueBinary("BinaryCAS");