         cache?.addItems(newItems)
         let itemsAdded = _indexesForItems(Set(newItems), inArray: items)
         dispatch_async(dispatch_get_main_queue()) { () -> Void in
-            delegate?.itemsUpdated(itemsAdded, itemsDeleted: [])
+            self.delegate?.itemsUpdated(itemsAdded, itemsDeleted: [])
         }
     }
     


            cache?.clearCache()
            dispatch_async(dispatch_get_main_queue()) { () -> Void in
                cache?.addItems(items)
            }
        }
        else {

    private func _processNewItems(newItems: [T], clearCacheIfNewItemsAreDifferent: Bool) {
        if newItems == items {
            dispatch_async(dispatch_get_main_queue()) { () -> Void in
                self.delegate?.itemsUpdated([], itemsDeleted: [])
            }
            return
        }
