     let samplingInterval = 6
     
     @IBOutlet weak var conversationCollectionView: UICollectionView!
+    let conversationCollectionViewContentInsetYOffset: CGFloat = 10
 
     @IBOutlet weak var messageToolbar: MessageToolbar!
     @IBOutlet weak var messageToolbarBottomConstraint: NSLayoutConstraint!

            dispatch_async(dispatch_get_main_queue()) { [weak self] in

                UIView.animateWithDuration(0.2, delay: 0.1, options: UIViewAnimationOptions.CurveEaseInOut, animations: {
                    self?.conversationCollectionView.contentInset.top = 64

                    friendRequestViewTop.constant -= FriendRequestView.height
                    self?.view.layoutIfNeeded()

                }, completion: { _ in
                    friendRequestView.removeFromSuperview()

    }

    private func setConversaitonCollectionViewOriginalContentInset() {

        conversationCollectionView.contentInset.top = 64 + conversationCollectionViewContentInsetYOffset

        setConversaitonCollectionViewContentInsetBottom(CGRectGetHeight(messageToolbar.bounds) + sectionInsetBottom)
    }

