MVC is a very basic design principle, i don't think there is any sample dedicated to it.
as far as i remember not all samples adhere to it, maybe you take a look around the more complex samples to check them.
BB java kind of mixes MVC usually as the display classes (screen) also have a lot of controller functionality as they implement the listener interfaces.
we have a service registry class where we register all kind of services that we use from the view classes to have a better modularity, but a very strict MVC would not be benefical to a random developer looking at our code, so we play it rather loose.
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