class SKDownload : NSObject {
    var contentIdentifier: String! { get }
    var state: SKDownloadState { get }
    @NSCopying var contentURL: NSURL! { get }
    var progress: Float { get }
    @NSCopying var error: NSError! { get }
    var timeRemaining: NSTimeInterval { get }
    @NSCopying var contentLength: NSNumber! { get }
    var contentVersion: String! { get }
    class func contentURLForProductID(_ productID: String!) -> NSURL!
    class func deleteContentForProductID(_ productID: String!)
}

class SKDownload : NSObject {
    var contentIdentifier: String { get }
    var state: SKDownloadState { get }
    @NSCopying var contentURL: NSURL? { get }
    var progress: Float { get }
    @NSCopying var error: NSError? { get }
    var timeRemaining: NSTimeInterval { get }
    @NSCopying var contentLength: NSNumber { get }
    var contentVersion: String? { get }
    var transaction: SKPaymentTransaction? { get }
    class func contentURLForProductID(_ productID: String) -> NSURL?
    class func deleteContentForProductID(_ productID: String)
}

var contentIdentifier: String! { get }

var contentIdentifier: String { get }

@NSCopying var contentLength: NSNumber! { get }

@NSCopying var contentLength: NSNumber { get }

@NSCopying var contentURL: NSURL! { get }

@NSCopying var contentURL: NSURL? { get }

class func contentURLForProductID(_ productID: String!) -> NSURL!

class func contentURLForProductID(_ productID: String) -> NSURL?

var contentVersion: String! { get }

var contentVersion: String? { get }

class func deleteContentForProductID(_ productID: String!)

class func deleteContentForProductID(_ productID: String)

@NSCopying var error: NSError! { get }

@NSCopying var error: NSError? { get }

struct SKDownloadState {
    init(_ value: Int)
    var value: Int
}

struct SKDownloadState : RawRepresentable {
    init(_ rawValue: Int)
    init(rawValue rawValue: Int)
    var rawValue: Int
}

class SKMutablePayment : SKPayment {
    var productIdentifier: String!
    var quantity: Int
    @NSCopying var requestData: NSData!
    var applicationUsername: String!
}

class SKMutablePayment : SKPayment {
    var productIdentifier: String
    var quantity: Int
    @NSCopying var requestData: NSData?
    var applicationUsername: String?
}

var applicationUsername: String!

var applicationUsername: String?

var productIdentifier: String!

var productIdentifier: String

@NSCopying var requestData: NSData!

@NSCopying var requestData: NSData?

class SKPayment : NSObject, NSCopying, NSMutableCopying {
    class func paymentWithProduct(_ product: SKProduct!) -> AnyObject!
    var productIdentifier: String! { get }
    @NSCopying var requestData: NSData! { get }
    var quantity: Int { get }
    var applicationUsername: String! { get }
}

class SKPayment : NSObject, NSCopying, NSMutableCopying {
    class func paymentWithProduct(_ product: SKProduct) -> AnyObject
    var productIdentifier: String { get }
    @NSCopying var requestData: NSData? { get }
    var quantity: Int { get }
    var applicationUsername: String? { get }
}

var applicationUsername: String! { get }

var applicationUsername: String? { get }

class func paymentWithProduct(_ product: SKProduct!) -> AnyObject!

class func paymentWithProduct(_ product: SKProduct) -> AnyObject

var productIdentifier: String! { get }

var productIdentifier: String { get }

@NSCopying var requestData: NSData! { get }

@NSCopying var requestData: NSData? { get }

class SKPaymentQueue : NSObject {
    class func defaultQueue() -> SKPaymentQueue!
    class func canMakePayments() -> Bool
    func addPayment(_ payment: SKPayment!)
    func restoreCompletedTransactions()
    func restoreCompletedTransactionsWithApplicationUsername(_ username: String!)
    func finishTransaction(_ transaction: SKPaymentTransaction!)
    func addTransactionObserver(_ observer: SKPaymentTransactionObserver!)
    func removeTransactionObserver(_ observer: SKPaymentTransactionObserver!)
    var transactions: [AnyObject]! { get }
    func startDownloads(_ downloads: [AnyObject]!)
    func pauseDownloads(_ downloads: [AnyObject]!)
    func resumeDownloads(_ downloads: [AnyObject]!)
    func cancelDownloads(_ downloads: [AnyObject]!)
}

class SKPaymentQueue : NSObject {
    class func defaultQueue() -> SKPaymentQueue
    class func canMakePayments() -> Bool
    func addPayment(_ payment: SKPayment)
    func restoreCompletedTransactions()
    func restoreCompletedTransactionsWithApplicationUsername(_ username: String?)
    func finishTransaction(_ transaction: SKPaymentTransaction)
    func addTransactionObserver(_ observer: SKPaymentTransactionObserver)
    func removeTransactionObserver(_ observer: SKPaymentTransactionObserver)
    var transactions: [SKPaymentTransaction]? { get }
    func startDownloads(_ downloads: [SKDownload])
    func pauseDownloads(_ downloads: [SKDownload])
    func resumeDownloads(_ downloads: [SKDownload])
    func cancelDownloads(_ downloads: [SKDownload])
}

func addPayment(_ payment: SKPayment!)

func addPayment(_ payment: SKPayment)

func addTransactionObserver(_ observer: SKPaymentTransactionObserver!)

func addTransactionObserver(_ observer: SKPaymentTransactionObserver)

func cancelDownloads(_ downloads: [AnyObject]!)

func cancelDownloads(_ downloads: [SKDownload])

class func defaultQueue() -> SKPaymentQueue!

class func defaultQueue() -> SKPaymentQueue

func finishTransaction(_ transaction: SKPaymentTransaction!)

func finishTransaction(_ transaction: SKPaymentTransaction)

func pauseDownloads(_ downloads: [AnyObject]!)

func pauseDownloads(_ downloads: [SKDownload])

func removeTransactionObserver(_ observer: SKPaymentTransactionObserver!)

func removeTransactionObserver(_ observer: SKPaymentTransactionObserver)

func restoreCompletedTransactionsWithApplicationUsername(_ username: String!)

func restoreCompletedTransactionsWithApplicationUsername(_ username: String?)

func resumeDownloads(_ downloads: [AnyObject]!)

func resumeDownloads(_ downloads: [SKDownload])

func startDownloads(_ downloads: [AnyObject]!)

func startDownloads(_ downloads: [SKDownload])

var transactions: [AnyObject]! { get }

var transactions: [SKPaymentTransaction]? { get }

class SKPaymentTransaction : NSObject {
    var error: NSError! { get }
    var originalTransaction: SKPaymentTransaction! { get }
    var payment: SKPayment! { get }
    var transactionDate: NSDate! { get }
    var transactionIdentifier: String! { get }
    var downloads: [AnyObject]! { get }
    var transactionState: SKPaymentTransactionState { get }
}

class SKPaymentTransaction : NSObject {
    var error: NSError? { get }
    var originalTransaction: SKPaymentTransaction? { get }
    var payment: SKPayment { get }
    var transactionDate: NSDate? { get }
    var transactionIdentifier: String? { get }
    var downloads: [AnyObject]? { get }
    var transactionState: SKPaymentTransactionState { get }
}

var downloads: [AnyObject]! { get }

var downloads: [AnyObject]? { get }

var error: NSError! { get }

var error: NSError? { get }

var originalTransaction: SKPaymentTransaction! { get }

var originalTransaction: SKPaymentTransaction? { get }

var payment: SKPayment! { get }

var payment: SKPayment { get }

var transactionDate: NSDate! { get }

var transactionDate: NSDate? { get }

var transactionIdentifier: String! { get }

var transactionIdentifier: String? { get }

protocol SKPaymentTransactionObserver : NSObjectProtocol {
    func paymentQueue(_ queue: SKPaymentQueue!, updatedTransactions transactions: [AnyObject]!)
    optional func paymentQueue(_ queue: SKPaymentQueue!, removedTransactions transactions: [AnyObject]!)
    optional func paymentQueue(_ queue: SKPaymentQueue!, restoreCompletedTransactionsFailedWithError error: NSError!)
    optional func paymentQueueRestoreCompletedTransactionsFinished(_ queue: SKPaymentQueue!)
    optional func paymentQueue(_ queue: SKPaymentQueue!, updatedDownloads downloads: [AnyObject]!)
}

protocol SKPaymentTransactionObserver : NSObjectProtocol {
    func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction])
    optional func paymentQueue(_ queue: SKPaymentQueue, removedTransactions transactions: [SKPaymentTransaction])
    optional func paymentQueue(_ queue: SKPaymentQueue, restoreCompletedTransactionsFailedWithError error: NSError)
    optional func paymentQueueRestoreCompletedTransactionsFinished(_ queue: SKPaymentQueue)
    optional func paymentQueue(_ queue: SKPaymentQueue, updatedDownloads downloads: [SKDownload])
}

optional func paymentQueue(_ queue: SKPaymentQueue!, removedTransactions transactions: [AnyObject]!)

optional func paymentQueue(_ queue: SKPaymentQueue, removedTransactions transactions: [SKPaymentTransaction])

optional func paymentQueue(_ queue: SKPaymentQueue!, restoreCompletedTransactionsFailedWithError error: NSError!)

optional func paymentQueue(_ queue: SKPaymentQueue, restoreCompletedTransactionsFailedWithError error: NSError)

optional func paymentQueue(_ queue: SKPaymentQueue!, updatedDownloads downloads: [AnyObject]!)

optional func paymentQueue(_ queue: SKPaymentQueue, updatedDownloads downloads: [SKDownload])

func paymentQueue(_ queue: SKPaymentQueue!, updatedTransactions transactions: [AnyObject]!)

func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction])

optional func paymentQueueRestoreCompletedTransactionsFinished(_ queue: SKPaymentQueue!)

optional func paymentQueueRestoreCompletedTransactionsFinished(_ queue: SKPaymentQueue)

class SKProduct : NSObject {
    var localizedDescription: String! { get }
    var localizedTitle: String! { get }
    var price: NSDecimalNumber! { get }
    var priceLocale: NSLocale! { get }
    var productIdentifier: String! { get }
    var downloadable: Bool { get }
    var contentVersion: String! { get }
    var contentLengths: [AnyObject]! { get }
}

class SKProduct : NSObject {
    var localizedDescription: String? { get }
    var localizedTitle: String? { get }
    var price: NSDecimalNumber? { get }
    var priceLocale: NSLocale? { get }
    var productIdentifier: String? { get }
    var downloadable: Bool { get }
    var contentVersion: String? { get }
    var contentLengths: [NSNumber]? { get }
}

var contentLengths: [AnyObject]! { get }

var contentLengths: [NSNumber]? { get }

var contentVersion: String! { get }

var contentVersion: String? { get }

var localizedDescription: String! { get }

var localizedDescription: String? { get }

var localizedTitle: String! { get }

var localizedTitle: String? { get }

var price: NSDecimalNumber! { get }

var price: NSDecimalNumber? { get }

var priceLocale: NSLocale! { get }

var priceLocale: NSLocale? { get }

var productIdentifier: String! { get }

var productIdentifier: String? { get }

class SKProductsRequest : SKRequest {
    init!(productIdentifiers productIdentifiers: Set<NSObject>!)
    unowned(unsafe) var delegate: SKProductsRequestDelegate!
}

class SKProductsRequest : SKRequest {
    init(productIdentifiers productIdentifiers: Set<NSObject>)
    unowned(unsafe) var delegate: SKProductsRequestDelegate?
}

unowned(unsafe) var delegate: SKProductsRequestDelegate!

unowned(unsafe) var delegate: SKProductsRequestDelegate?

init!(productIdentifiers productIdentifiers: Set<NSObject>!)

init(productIdentifiers productIdentifiers: Set<NSObject>)

protocol SKProductsRequestDelegate : SKRequestDelegate, NSObjectProtocol {
    func productsRequest(_ request: SKProductsRequest!, didReceiveResponse response: SKProductsResponse!)
}

protocol SKProductsRequestDelegate : SKRequestDelegate, NSObjectProtocol {
    func productsRequest(_ request: SKProductsRequest, didReceiveResponse response: SKProductsResponse)
}

func productsRequest(_ request: SKProductsRequest!, didReceiveResponse response: SKProductsResponse!)

func productsRequest(_ request: SKProductsRequest, didReceiveResponse response: SKProductsResponse)

class SKProductsResponse : NSObject {
    var products: [AnyObject]! { get }
    var invalidProductIdentifiers: [AnyObject]! { get }
}

class SKProductsResponse : NSObject {
    var products: [SKProduct]? { get }
    var invalidProductIdentifiers: [String]? { get }
}

var invalidProductIdentifiers: [AnyObject]! { get }

var invalidProductIdentifiers: [String]? { get }

var products: [AnyObject]! { get }

var products: [SKProduct]? { get }

class SKReceiptRefreshRequest : SKRequest {
    init!(receiptProperties properties: [NSObject : AnyObject]!)
    var receiptProperties: [NSObject : AnyObject]! { get }
}

class SKReceiptRefreshRequest : SKRequest {
    init?(receiptProperties properties: [String : AnyObject])
    var receiptProperties: [String : AnyObject]? { get }
}

init!(receiptProperties properties: [NSObject : AnyObject]!)

init?(receiptProperties properties: [String : AnyObject])

var receiptProperties: [NSObject : AnyObject]! { get }

var receiptProperties: [String : AnyObject]? { get }

class SKRequest : NSObject {
    unowned(unsafe) var delegate: SKRequestDelegate!
    func cancel()
    func start()
}

class SKRequest : NSObject {
    unowned(unsafe) var delegate: SKRequestDelegate?
    func cancel()
    func start()
}

unowned(unsafe) var delegate: SKRequestDelegate!

unowned(unsafe) var delegate: SKRequestDelegate?

protocol SKRequestDelegate : NSObjectProtocol {
    optional func requestDidFinish(_ request: SKRequest!)
    optional func request(_ request: SKRequest!, didFailWithError error: NSError!)
}

protocol SKRequestDelegate : NSObjectProtocol {
    optional func requestDidFinish(_ request: SKRequest)
    optional func request(_ request: SKRequest, didFailWithError error: NSError?)
}

optional func request(_ request: SKRequest!, didFailWithError error: NSError!)

optional func request(_ request: SKRequest, didFailWithError error: NSError?)

optional func requestDidFinish(_ request: SKRequest!)

optional func requestDidFinish(_ request: SKRequest)