Swift: How to remember cookies for further http requests

Question

I am working on a login application. After successful login response comes back with cookie data.
How can I use/save this data for my future requests?
For starters

Answer 1

class func cookiesWithResponseHeaderFields(_ headerFields: [String : String], forURL URL: NSURL) -> [NSHTTPCookie]

Note that headerFields is [String: String] Dictionary and the compiler is complaining that you're passing [NSObject : AnyObject]