docs: @VisibleForTesting
    public static void sendToTMaster(String command,
                                     String topologyName,
                                     SchedulerStateManagerAdaptor stateManager,
                                     NetworkUtils.TunnelConfig tunnelConfig)
        throws TMasterException {
      final List<String> empty = new ArrayList<String>();
      sendToTMasterWithArguments(command, topologyName, empty, stateManager, tunnelConfig);
    }