public long getWeight(TileCoord coord) {
    return weights.getOrDefault(coord, 0L);
  }
Holds tile weights to compute weighted average tile sizes.
<p>
{@link TopOsmTiles} can be used to get tile weights from 90 days of openstreetmap.org tile traffic.
planetiler-core/src/main/java/com/onthegomap/planetiler/util/TileWeights.java