New Post: How do I cancel a download in progress

Hi!
Flickr.NET has been a godsend when fetching images from Flickr. However, I do not understand how I can cancel the download from Flickr.

C# Code:

var t = new TaskCompletionSource<FlickrResult<SizeCollection>>();

            var flickr = new Flickr("XXXX", "XXXX");

            flickr.PhotosGetSizesAsync(photoToken, s => t.TrySetResult(s));
            
            FlickrResult<SizeCollection> flickrImages = await t.Task;

How do I add my Cancellation Token to this block of code to have it cancel the PhotosGetSizesAsync task when ctx.token is set to true?

Cheers!