   }
 }
 
-// MARK: OnboardingDelegate 
+// MARK: OnboardingDelegate
 
 extension PaperOnboarding: OnboardingContentViewDelegate {
-  
+
   func onboardingItemAtIndex(index: Int) -> OnboardingItemInfo? {
     return itemsInfo?[index]
   }
-}+}

    guard case let dataSource as PaperOnboardingDataSource = self.dataSource else {
      fatalError("set dataSource")
    }
    
    var items = [OnboardingItemInfo]()
    for index in 0..<itemsCount {
      let info = dataSource.onboardingItemAtIndex(index)

    pageView = createPageView()
    gestureControl = GestureControl(view: self, delegate: self)
  }

  private func createPageView() -> PageView {
    let pageView = PageView.pageViewOnView(self,
                                          itemsCount: itemsCount,
