code: public void broadcast (ClientObject caller, String message, InvocationListener listener)
          throws InvocationException
      {
          BodyObject body = _locator.forClient(caller);
  
          // make sure the requesting user has broadcast privileges
          InvocationException.requireAccess(body, ChatCodes.BROADCAST_ACCESS);
          broadcast(body.getVisibleName(), null, message, false, true);
      }
docs: Processes a {@link ChatService#broadcast} request.