docs: private void activateTopologyHandler(String topologyName) throws TMasterException {
      assert !potentialStaleExecutionData;
      NetworkUtils.TunnelConfig tunnelConfig =
          NetworkUtils.TunnelConfig.build(config, NetworkUtils.HeronSystem.SCHEDULER);
      TMasterUtils.transitionTopologyState(topologyName,
          TMasterUtils.TMasterCommand.ACTIVATE, Runtime.schedulerStateManagerAdaptor(runtime),
          TopologyAPI.TopologyState.PAUSED, TopologyAPI.TopologyState.RUNNING, tunnelConfig);
    }