TabbedPage event on tab click or refresh tab when same tab is clicked?

I'm using a TabbedPage with Xamarin.Forms, and when a user is already on Tab 2, and clicks on Tab 2, I'd either like that tab to reload, or i'd like to run my own custom code to refresh the page.

I have been trying to find any sort of event I could hook into, or a way to do this with custom renderers but have been unable to find anything. What's the simplest way to do this?

Thanks!