@Override
public void writeExternal(ObjectOutput out) throws IOException {
super.writeExternal(out);
if (correlationId != null) out.writeUTF(correlationId);
else out.writeObject(null);
}
protected void copy(AbstractResponseMessage message, String correlationId) {
super.copy(message);
message.correlationId = correlationId;
}
@Override
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
super.readExternal(in);
this.correlationId = in.readUTF();
}