             toAttribute: .Width,
             multiplier: imageView!.frame.height / imageView!.frame.width
         )
-    
+        
     }
     
     /**

        fatalError("init(coder:) has not been implemented")
    }
    
    // MARK: - Override method
    
    public override func drawRect(rect: CGRect) {
        
        addWidthConstraintToElement(
            self,
            rule: "\(width)"

     - parameter: multiplier:       The multiplier to change the value (default: 1.0)
     - parameter: value:            The value set in the constraint (default: 0.0).
     - parameter: priority:         The constraint priority (default: 1000).
     */
    private func addConstraintFrom(
        from: AnyObject,
        fromAttribute: NSLayoutAttribute,
