@Override
  public void emittedFeatures(int z, String layer, int numFeatures) {
    emittedFeatures.labels(Integer.toString(z), layer).inc(numFeatures);
  }
Returns a new {@code PrometheusStats} that and schedules it to push to {@code destination} every {@code interval}.
planetiler-core/src/main/java/com/onthegomap/planetiler/stats/PrometheusStats.java