protected void removeServiceListener(SMSEntryUpdateListener updateListener){
  serviceObjects.remove(updateListener);
  if (serviceObjects.isEmpty()) {
    subscription.cancel();
  }
}

protected void removeServiceListener ( SMSEntryUpdateListener updateListener ) { serviceObjects . remove ( updateListener ) ; if ( serviceObjects . isEmpty ( ) ) { subscription . cancel ( ) ; } }
method to remove objects that needs notifications
