@Override public String toString() {
        List<String> inputs = new ArrayList<>();
        for (Input input : inputTemplates) {
          inputs.add(input.toString().replace("Input", "SelectTraceIdsFromServiceRemoteService"));
        }
        return "FlatMapServicesToInputs{" + inputs + "}";
      }
Applies all deferred service names to all input templates
zipkin-storage/cassandra/src/main/java/zipkin2/storage/cassandra/SelectTraceIdsFromServiceRemoteService.java