public class ChartTooltip : Xamarin.Forms.Frame, Xamarin.Forms.IAnimatable, Xamarin.Forms.IElementConfiguration<Frame>, Xamarin.Forms.IElementController, Xamarin.Forms.ILayout, Xamarin.Forms.ILayoutController, Xamarin.Forms.Internals.IDynamicResourceHandler, Xamarin.Forms.Internals.INameScope, Xamarin.Forms.IViewController, Xamarin.Forms.IVisualElementController