I am trying to figure out way to create MSStickers with images that are hosted on the web. I can create MSStickers with local images, e.g.:
NSString *imagePath = [[NSBundle mainBundle] pathForResource: @"image_name" 
                                                      ofType: @"png"];
NSURL *imageURL = [NSURL fileURLWithPath: urlString];
MSSticker *sticker = [[MSSticker alloc] initWithContentsOfFileURL: stickerURL
                                             localizedDescription: @"my-sticker"                                          
                                                            error: &err];
But I cannot do something like this:
NSString *imageURLString = @"https://my-cdn/my-sticker.png"; 
NSURL *imageURL = [NSURL urlWithString: urlString];
MSSticker *sticker = [[MSSticker alloc] initWithContentsOfFileURL: stickerURL
                                             localizedDescription: @"my-sticker"                                          
                                                            error: &err];
 
     
    