Dismissing a Presented View Controller?

I think Apple are covering their backs a little here for a potentially kludgy piece of API.

In my experience, it comes in handy when you need to dismiss it from any ViewController you want and perform different tasks for each viewcontroller that dismisses it. Any viewController that adopts the protocol can dismiss the view in it's own way. (ipad vs iphone, or passing different data when dismissing from different views, calling different methods when dismissing, etc..).

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