     public func controllerDidChangeContent(controller: NSFetchedResultsController) {
         Logging.log("controllerDidChangeContent")
         let visible = collectionView.indexPathsForVisibleItems()
-        
-        Logging.log("Handle \(changeActions.count) change actions")
         
         collectionView.performBatchUpdates({ () -> Void in
             for action in self.changeActions {

    }
    
    public func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
        Logging.log("sizeForItemAtIndexPath:\(indexPath)")
        let object = fetchedController.objectAtIndexPath(indexPath)
        configureCell(measuringCell!, atIndexPath: indexPath, object: object, forMeasuring:true)
        let height = calculateHeightForConfiguredSizingCell(measuringCell!)

    }
    
    public func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
        let cell:UICollectionViewCell = collectionView.dequeueReusableCellWithReuseIdentifier(FetchedCollectionCellIdentifier, forIndexPath: indexPath)
        let object:AnyObject = fetchedController!.objectAtIndexPath(indexPath)
        configureCell(cell, atIndexPath:indexPath, object:object, forMeasuring:false)
