Overridden.kt

// Overridden.kt

public open class User {
    protected open fun getAge() = 16
}

public class Moderator : User() {
  // getAge() inherits the protected modifier as default
    override fun getAge() = 18
}

public class Staff : User() {
  // getAge() inherited protected modifier is overriden with public
    public override fun getAge() = 21
}