static func Login(username:String, password:String, completion: @escaping (_ success: Bool, _ response: DataResponse<Data?>?) -> ()) {

        var response:DataResponse<Data?>?

        AF.request("https://httpbin.org/basic-auth/(username)/(password)")
            .authenticate(username: username, password: password)
            .response { resp in
                response = resp
                completion(true,response)
        }

        if(response?.response?.statusCode == 200)
        {
            completion(true, response)
        }
        else {
            completion(false, nil)
        }
    }

code from action outlet
@IBAction func loginAction(sender: UIButton)
{
    AutheManager.Login(username: newAccountName, password: newPassword) { (success, response) in
        if (success  == true)
        {
            // rest of code
        }
        else
        {

        }
    }
}