Question du test Kotlin

open class Base(val name: String) {

    init { println("Initializing Base") }

    open val size: Int =
        name.length.also { println("Initializing size in Base: $it") }
}

class Derived(
    name: String,
    val lastName: String
    ) : Base(name.capitalize().also { println("Argument for Base: $it") }) {

    init { println("Initializing Derived") }

    override val size: Int =
        (super.size + lastName.length).also { println("Initializing size in Derived: $it") }
}

L'éxecution de val derived = Derived("jean", "Dupont"), affiche :