What is the purpose of empty class in Kotlin?

Question

I was going through Kotlin reference document and then I saw this.

The class declaration consists of the class name, the class header (

Answer 1

tldr: they want to demonstrate it's possible

even an empty class is of type Any and therefore has certain methods automatically. I think in most cases, this does not make sense, but in the documentation case it's used to show the simplest possible definition of a class.

The Java equivalent would be:

public final class Empty {
}