         }
     }
     
-    public func progressChangedClosure(completion: progressChangedHandler) {
-        progressChangedClosure = completion
-    }
-    
-    private func updateColors(colors: [UIColor]?) -> () {
+    private func updateColors(colors: [UIColor]?) {
         var convertedColors: [CGColorRef] = []
         if let inputColors = colors {
             for color in inputColors {

        }
    }
    
    public var startAngle: Double = 0.0 {
        didSet {
            progressView.startAngle = oldValue

        super.awakeFromNib()
        configureProgressLayer()
        configureProgressGuideLayer(self.showProgressGuide)
    }
    
    /**
    This closure is called when set value to `progress` property.
    
    :param: completion progress changed closure.
    */
    public func progressChangedClosure(completion: progressChangedHandler) {
        progressChangedClosure = completion
    }
    
    private func configureProgressLayer() {
