     }
     
     /// Show notification on view.
+    @discardableResult
     open func showOn(_ view: UIView) -> Self {
         noticeViewController.showAnimations = showAnimations
         noticeViewController.hideAnimations = hideAnimations

    }
    
    /// Add content to display.
    open class func addContent(_ view: UIView) -> NavigationNotice {
        let notice = NavigationNotice()
        notice.noticeViewController.setContent(view)

        return self
    }
    
    @discardableResult
    open func position(_ position: NoticePosition) -> Self {
        noticeViewController.position = position
        return self
