docs: public List<String> getSpoutNames(PhysicalPlan pp) {
      TopologyAPI.Topology localTopology = pp.getTopology();
      ArrayList<String> spoutNames = new ArrayList<>();
      for (TopologyAPI.Spout spout : localTopology.getSpoutsList()) {
        spoutNames.add(spout.getComp().getName());
      }
  
      return spoutNames;
    }