old.swift

func old_setResizedImage(withURL url: NSURL) {
    let photonUrl = photonize(url: url, forSize: frame.size)

    let request = NSMutableURLRequest(URL: photonUrl)
    request.HTTPShouldHandleCookies = false
    request.addValue("image/*", forHTTPHeaderField: "Accept")

    let session = NSURLSession.sharedSession()
    let task = session.dataTaskWithRequest(request) { [weak self] data, response, error in
        let scale = UIScreen.mainScreen().scale
        guard let data = data,
            let image = UIImage(data: data, scale: scale) else {
            return
        }
        self?.image = image
    }
    task.resume()
}