readBufferSource property

ReadbufferSource? readBufferSource
getter/setter pair

just to see if we should create a cache for blocks

Implementation

//final Set<int> _blockSet = Set();

// final StatisticsStorage<String, PoiWayBundle> _storage =
//     StatisticsStorage<String, PoiWayBundle>();
//
// late LruCache<String, PoiWayBundle> _blockCache;

ReadbufferSource? readBufferSource;