Phase getPhase() {
    return Phase.from(phaser.getPhase());
  }
Returns a new {@link ForWorker} handle for a worker to use to coordinate with other workers.
<p>
If {@link #registerWorkers(int)} has not been called yet, or called with a smaller number, this will automatically
register another worker.
planetiler-core/src/main/java/com/onthegomap/planetiler/reader/osm/OsmPhaser.java