private async Task AddOverlay()
{
_mapoverlay = await GroundOverlay.CreateAsync(map1.JsRuntime, "https://www.lib.utexas.edu/maps/historical/newark_nj_1922.jpg", new LatLngBoundsLiteral()
{
North = 40.773941,
South = 40.712216,
East = -74.12544,
West = -74.22655
}, new GroundOverlayOptions()
{
Opacity = 0.5
});
await _mapoverlay.SetMap(map1.InteropObject);
}
private async Task RemoveOverlay()
{
await _mapoverlay.SetMap(null);
}