         return false
     }
 
-    public func upsert(instances: [Collectible])->Bool {
+    public func upsert(instances: [Collectible]) -> Bool {
         var result=true
         for instance in instances {
             result=result&&self.upsert(instance)

        throw SecurityScopedBookMarkError.BookMarkFailed(message: "Invalid path Error for \(url)")
    }

    private func _getBookMarkKeyFor(url: NSURL, appScoped: Bool=false, documentfileURL: NSURL?=nil)->String {
        if let path=url.path {
            return "\(path)-\((appScoped ? "YES" : "NO" ))-\(documentfileURL?.path ?? Default.NO_PATH ))"
        } else {


     - parameter block:           the enumeration block
     */
    public static func enumerateMembersFromRegistries<T>(block:((instance: T) -> ())?)->[T] {
        var instances=[T]()
        for (_, instance) in _objectByUID {
            if let o=instance as? T {
