         frame.size.width = cell.intrinsicContentSize().width
         cell.frame = frame
         
-        self.invalidateIntrinsicContentSize(completion)
+        self.invalidateIntrinsicContentSize(nil)
     }
     
     internal func createAndSwitchToNewCell(cell: TFBubbleItUpViewCell) {

        self.bubbleItUpDelegate?.bubbleItUpViewDidChange?(self, text:text)
    }

    internal func needUpdateLayout(cell: TFBubbleItUpViewCell, completion: (() -> ())? = nil) {
        self.collectionViewLayout.invalidateLayout()

        // Update cell frame by its intrinsic size

            if let cell = self.cellForItemAtIndexPath(NSIndexPath(forItem: self.items.count - 1, inSection: 0)) as? TFBubbleItUpViewCell {
                cell.configureWithItem(self.items[self.items.count - 1])
                cell.resignFirstResponder()
                self.needUpdateLayout(cell)
                completion?()
            }
//            self.bubbleItUpDelegate?.bubbleItUpViewDidChange?(self, text:text)
            
