public AggregateMapDataProvider(IFileSystemService fileSystemService, INetworkService networkService, ITrace trace)
{
_osmMapDataProvider = new OpenStreetMapDataProvider(fileSystemService, networkService, trace);
_mapzenMapDataProvider = new MapzenMapDataProvider(fileSystemService, networkService, trace);
_mapzenElevationDataProvider = new MapzenElevationDataProvider(fileSystemService, networkService, trace);
_srtmElevationDataProvider = new SrtmElevationDataProvider(fileSystemService, networkService, trace);
}