*/
public Controller createClientController(UserRequest ureq, WindowControl wControl) {
InstantMessagingClient client = clientManager.getInstantMessagingClient(ureq.getIdentity().getName());
//there are two versions of the controller, either join the course chat automatically or upon request
client.setGroupChatManager((GroupChatManagerController) actionControllerCreator.createController(ureq, wControl));
return new InstantMessagingMainController(ureq, wControl);
}