@Override
      public void processFeature(SourceFeature sourceFeature, FeatureCollector features) {
        if (sourceFeature.isPoint() && nodes2.contains(sourceFeature.id())) {
          features.point("start_nodes")
            .setMaxZoom(0);
        }
      }
In-memory tests with fake data and profiles to ensure all features work end-to-end.
planetiler-core/src/test/java/com/onthegomap/planetiler/PlanetilerTests.java