readPoiData method
Reads POI data for an area defined by the tile in the upper left and the tile in the lower right corner. This implementation takes the data storage of a MapFile into account for greater efficiency.
@param upperLeft tile that defines the upper left corner of the requested area. @param lowerRight tile that defines the lower right corner of the requested area. @return map data for the tile.
Implementation
@override
Future<DatastoreReadResult?> readPoiData(Tile upperLeft, Tile lowerRight) async {
await _lateOpen();
return _readMapDataComplete(upperLeft, lowerRight, MapfileSelector.POIS);
}