How to print in swift, response body instead of header? : My current code prints the header information, but I want the body response. I'm trying to obtain a token to use for another request. 

        request.httpMethod = "GET"
        request.allHTTPHeaderFields = headers

        let session = URLSession.shared
        let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
            if (error != nil) {
                print(error!)
            } else {
                let httpResponse = response as? HTTPURLResponse
                print(httpResponse!)
            }})
        dataTask.resume()

