* @param iterRecipients iterator over set of recipients
* @param event the event that we want to propagate
*/
private void propagateEvent(Iterator iterRecipients, ChatEvent event) {
while (iterRecipients.hasNext()) {
User recipient = (User) iterRecipients.next();
UserInfo userInfo = findUserInfoForUser(recipient);
if (userInfo != null) {
userInfo.addEvent(event);
}