NSUserActivity+CustomReflectable extension so an user activity can be po-ed in lldb / Xcode

NSUserActivity+CustomReflectable.swift

//
//  NSUserActivity+CustomReflectable.swift
//  Tom Kraina <me@tomkraina.com>
//
//  Created by Tom Kraina on 19/11/2016.
//  Copyright © 2016 Tom Kraina <me@tomkraina.com>. All rights reserved.
//

import Foundation

// Inspired by:
// - https://medium.com/@darjeelingsteve/easier-swift-debugging-with-mirrors-3b6e551f3c47

// MARK: - CustomReflectable
extension NSUserActivity : CustomReflectable {
    
    public func customMirror() -> Mirror {
        let children = DictionaryLiteral<String, Any>(dictionaryLiteral:
            ("activityType", activityType),
            ("title", title),
            ("userInfo", userInfo.debugDescription),
            ("requiredUserInfoKeys", requiredUserInfoKeys),
            ("needsSave", needsSave),
            ("webpageURL", webpageURL),
            ("expirationDate", expirationDate.debugDescription),
            ("keywords", keywords),
            ("supportsContinuationStreams", supportsContinuationStreams),
            ("delegate", delegate),
            ("eligibleForHandoff", eligibleForHandoff),
            ("eligibleForSearch", eligibleForSearch),
            ("eligibleForPublicIndexing", eligibleForPublicIndexing))
        return Mirror(NSUserActivity.self, children: children, displayStyle: .Class, ancestorRepresentation: .Suppressed)
    }
}

Example output:

(lldb) po userActivity
▿ Optional(<NSUserActivity: 0x7fb890d2a340>)
▿ Some : <NSUserActivity: 0x7fb890d2a340>
- activityType : "NSUserActivityTypeBrowsingWeb"
- title : nil
- userInfo : "Optional([:])"
- requiredUserInfoKeys : []
- needsSave : true
- webpageURL : Optional(http://tomkraina.com/)
- expirationDate : ""
- keywords : []
- supportsContinuationStreams : false
- delegate : nil
- eligibleForHandoff : true
- eligibleForSearch : false
- eligibleForPublicIndexing : false