public ForZoom withShape(TilePredicate shape) {
      return new ForZoom(z, minX, minY, maxX, maxY, shape);
    }
X/Y extents within a given zoom level. {@code minX} and {@code minY} are inclusive and {@code maxX} and {@code
maxY} are exclusive. shape is an optional polygon defining a more refine shape
planetiler-core/src/main/java/com/onthegomap/planetiler/geo/TileExtents.java