         return 1
     }
     
-    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section:Int) -> Int
+    func collectionView(_ collectionView:UICollectionView, numberOfItemsInSection section:Int) -> Int
     {
         let count:Int
         

    {
        self.init()
        translatesAutoresizingMaskIntoConstraints = false
        backgroundColor = UIColor.white
        clipsToBounds = true
        self.controller = controller
        

            "barHeight":barHeight]
        
        addConstraints(NSLayoutConstraint.constraints(
            withVisualFormat:"H:|-0-[collectionView]-0-|",
            options:[],
            metrics:metrics,
            views:views))
        addConstraints(NSLayoutConstraint.constraints(
            withVisualFormat:"V:|-(barHeight)-[collectionView]-0-|",
            options:[],
            metrics:metrics,
            views:views))
