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object boop {
abstract class Bar { protected def f(): Any }
class Bar1 extends Bar { protected def f(): Int = 5 }
class Bar2 extends Bar { protected def f(): Int = 5 }
val xs = List(new Bar1, new Bar2)
type BarF = { def f(): Int }
var x: BarF = _
x = xs.head
x.f
(new Bar1).f
}
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