Class that subclasses PFObject and conforms to JSQMessageData

Question

I currently have a JSQMessagesViewController, but am running to the problem of storing my JSQMessages in Parse.com, since Parse.com won't allow this type of object. I've been trying to research ways of creating a class that subclasses PFObject while conforming to JSQMessageData so that I can create messages that are of type PFObject and thus able to be stored in Parse.com.

Below is my Messages class. In my JSQMessagesViewController I would typically call

    var newMessage = JSQMessage(senderId: "user", displayName: "user", text: "testing chat")

But now how would I do this with my Messages class?

import Foundation
import UIKit
import Parse

class Message: PFObject, PFSubclassing, JSQMessageData {
    var senderId_ : String!
    var senderDisplayName_ : String!
    var date_ : NSDate
    var isMediaMessage_ : Bool
    var hash_ : Int = 0
    var text_ : String


    override class func initialize() {
        var onceToken : dispatch_once_t = 0;
        dispatch_once(&onceToken) {
            self.registerSubclass()
        }
    }

    class func parseClassName() -> String {
            return "Messages"
        }

    convenience init(senderId: String?, text: String?) {
        self.init(senderId: senderId!, senderDisplayName: senderId, isMediaMessage: false, hash: 0, text: text!)
    }

    init(senderId: String, senderDisplayName: String?, isMediaMessage: Bool, hash: Int, text: String) {

            self.senderId_ = senderId
            self.senderDisplayName_ = senderDisplayName
            self.date_ = NSDate()
            self.isMediaMessage_ = isMediaMessage
            self.hash_ = hash
            self.text_ = text
            super.init()

        }

    func senderId() -> String? {
            return senderId_;
        }

    func senderDisplayName() -> String? {
            return senderDisplayName_;
        }

    func date() -> NSDate? {
            return date_;
        }

    func isMediaMessage() -> Bool {
                return isMediaMessage_;
        }

    func hash() -> UInt? {
        return UInt(hash_);
    }


    func text() -> String! {
        return text_;
    }

    func messageHash() -> UInt {
        return UInt(hash_)
    }
}    

And my implementation in my ChatView that is a JSQMessagesViewController:

    override func viewDidLoad(){
        super.viewDidLoad()
        var myObject = PFObject(className: "messages")
        var myMessage = Message(senderId: "User", text: "Some text")
        var messageArray:NSMutableArray = [myMessage]
        myObject["myArray"] = messageArray
        myObject.save()
   }

Currently receiving error

fatal error: use of unimplemented initializer 'init()' for class Message