Is anyone still missing required super classes in ...

# announcements

[kirillrakhman]

Is anyone still missing required super classes in interfaces (formally traits)? I just realized you can get most of the benefits by using extension methods in interfaces:

interface Mixin {
    fun BaseClass.mixin() = foo().toUpperCase()
}

abstract class BaseClass {
    fun foo() = "foo"
}

class Foo : BaseClass(), Mixin {
    fun bar() = mixin() + "!"
}