getImage method
Retrieve a tile as an image, based on it's coordinates and the current TileLayerOptions
Implementation
@override
AssetImage getImage(TileCoordinates coordinates, TileLayer options) {
final fallbackUrl = getTileFallbackUrl(coordinates, options);
return AssetImage(
getTileUrl(coordinates, options),
bundle: fallbackUrl == null
? null
: _FlutterMapAssetBundle(fallbackUrl: fallbackUrl),
);
}