// import 'package:flutter/material.dart';
// import 'package:flutter_map/flutter_map.dart';
// import 'package:flutter_map_tile_caching/flutter_map_tile_caching.dart';

// class BaseLayer extends StatelessWidget {
//   const BaseLayer({Key? key}) : super(key: key);

//   @override
//   Widget build(BuildContext context) {
//     return TileLayer(
//       urlTemplate: "https://cyberjapandata.gsi.go.jp/xyz/std/{z}/{x}/{y}.png",
//       tileProvider: FMTC.instance('OpenStreetMap (A)').getTileProvider(
//             settings: FMTCTileProviderSettings(
//               behavior: CacheBehavior.values.byName('cacheFirst'),
//               cachedValidDuration: const Duration(days: 14),
//             ),
//           ),
//     );
//   }
// }

// // var Esri_WorldImagery = L.tileLayer('https://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer/tile/{z}/{y}/{x}', {
// // 	attribution: 'Tiles © Esri — Source: Esri, i-cubed, USDA, USGS, AEX, GeoEye, Getmapping, Aerogrid, IGN, IGP, UPR-EGP, and the GIS User Community'
// // });