private async void OnDestroy()
{
await _controller?.UnregisterAsync();
await _controller?.DisposeAsync();
_controller = null;
await _channel?.ShutdownAsync();
_channel = null;
}
protected override async void OnClosed(EventArgs e)
{
base.OnClosed(e);
(_unityLibrary as IDisposable)?.Dispose();
_unityLibrary = null;
await _controller?.UnregisterAsync();
await _controller?.DisposeAsync();
_controller = null;
await _channel?.ShutdownAsync();
}