* TODO do we need to lock the message? Probably not, if anything just
* need to lock message/responder combo?
* And probably don't even need to do that because the queue is already
* locked (see run() method).
*/
State state = msg.getResponderStates().get(responderId);
if (state == null)
{
updateMessageState(msg, Message.State.NEW);
state = Message.State.NEW;