View Appearing method in Prism? how to load data Async?

I used to use Freshmvvm in my projects and now started using Prism. I still try to understand all possible methods. this is not a comprehension but I like to load data async in the viewmodel and freshvvm has

 protected async override void ViewIsAppearing(object sender, System.EventArgs e)
        {
}

I cant see anything similar in Prism. Is there? how do you load data async?

If I understand correct, functions are equal OnNavigatedTo = Init (when landing on the navigationpage), OnNavigatedFrom = reverseInit(when landing back to the page before)

Can somebody please shed some lights please?