private void removeUserSessions(String meetingId) {
log.debug("Cleaning up user sessions for meeting [" + meetingId + "]");
Iterator<Map.Entry<String, UserSession>> iterator = sessions.entrySet().iterator();
while(iterator.hasNext()){
Map.Entry<String, UserSession> entry = iterator.next();
UserSession userSession = entry.getValue();
log.debug("Got user [" + userSession.fullname + "] from meeting [" + userSession.conferencename + "]");
if (userSession.meetingID.equals(meetingId)) {
log.debug("Removing user [" + userSession.fullname + "] from meeting [" + userSession.conferencename + "]");
iterator.remove();
} else {