private Cell mergeIn(Cell other, double weight) {
      totalWeight += other.totalWeight * weight;
      weightedBytesSum += other.weightedBytesSum * weight;
      weightedArchivedBytesSum += other.weightedArchivedBytesSum * weight;
      archivedBytes.combine(other.archivedBytes);
      bytes.combine(other.bytes);
      for (var bigTile : other.topTiles) {
        acceptBigTile(bigTile.coord, bigTile.archivedSize, bigTile.layers);
      }
      return this;
    }
Returns average raw (not gzipped) tile size in this aggregation, weighted by the {@link TileWeights} instance
provided.

@see #weightedAverageArchivedSize()
planetiler-core/src/main/java/com/onthegomap/planetiler/util/TilesetSummaryStatistics.java