@Override
    public void toData(DataOutput out,
        SerializationContext context) throws IOException {
      super.toData(out, context);
      out.writeByte(valueIsByteArray ? 1 : 0);
      rawVal.writeAsByteArray(out);
    }
Processes this message. This method is invoked by the receiver of the message.

@param dm the distribution manager that is processing the message.
geode-core/src/main/java/org/apache/geode/internal/cache/tx/RemoteGetMessage.java