ListView.ItemAppearing works for a ViewCell but not triggered for a cell having custom renderer.

The ItemAppearing event for ListView is triggered for a ListView with ViewCell itemTemplate whose item template has not been rendered in iOS or Android but is not triggered when the ViewCell is rendered in iOS or Android?

projectsListView.ItemAppearing += (object sender, ItemVisibilityEventArgs e) => {
Console.WriteLine("Item appearing called");
};
The console message is printed when a "non-rendered" is passed as item template. Observed in Xamarin.Forms 1.4.3. Is it something to be implemented in the renderer?

This implementation is required to find if the list reached the end-of-scroll.Is there any other way in XF to find the same?