public TileExtents tileExtents() {
    if (tileExtents == null) {
      tileExtents = TileExtents.computeFromWorldBounds(PlanetilerConfig.MAX_MAXZOOM, world(), shape);
    }
    return tileExtents;
  }
Holds the bounds of the map to generate.
<p>
Call {@link #addFallbackProvider(Provider)} when input data source (i.e. {@link OsmInputFile}) is available to infer
bounds automatically. If no bounds are set, defaults to the entire planet.
planetiler-core/src/main/java/com/onthegomap/planetiler/config/Bounds.java