Last Enumeration Task Swift 2.0

Challenge Task 2 of 2

To the button enum, add a method named toUIBarButtonItem that returns an instance of UIBarButton item configured properly.

In the buttons.swift file there is a basic implementation of UIBarButtonItem. You can create buttons with three different styles and titles.

Using the associated values as titles for the button, return a button with style UIBarButtonStyle.Done for the Done member of the Button enum. Similarly for the Edit member, return a UIBarButtonItem instance with the style set to UIBarButtonStyle.Plain.

In both cases you can pass nil for target and action. Once you have a method, call it on the value we created in the previous task and assign it to a constant named doneButton.

I really can't grasp what they want me to do, task 1 was piece of cake, but this is way too much for me to handle.. (I'm paying 25$ a month for this, make the tasks more easy on the beginners please...)

import Foundation

enum UIBarButtonStyle {
    case Done
    case Plain
    case Bordered
}

class UIBarButtonItem {

    var title: String?
    let style: UIBarButtonStyle
    var target: AnyObject?
    var action: Selector

    init(title: String?, style: UIBarButtonStyle, target: AnyObject?, action: Selector) {
        self.title = title
        self.style = style
        self.target = target
        self.action = action
    }
}

enum Button {
    case Done(String)
    case Edit(String)

    func toUIBarButtonItem() -> UIBarButton {

    return UIBarButtonStyle.Done
    }
}

let done = Button.Done("Done")