protected void getDSCODEsForWrite() {
    final ByteBuffer cb = getCommBuffer();
    cb.clear();
    cb.putInt(messageType.id);
    cb.putInt(numberOfParts);

    cb.putInt(transactionId);
  }
Converts the header of this message into a <code>byte</code> array using a {@link ByteBuffer}.
geode-core/src/main/java/org/apache/geode/internal/cache/tier/sockets/ChunkedMessage.java