object Foo { def apply(x: String) = new Foo(x) }
class Foo(name: String)
case object Bar extends Foo("Bar")
case class Baz() extends Foo("Baz")
object Test extends dotty.runtime.LegacyApp {
  Foo("Bar") match {
    case Bar => println("What?")
    case _ => println("OK")
  }
  Foo("Baz") match {
    case Baz() => println("What?")
    case _ => println("OK")
  }
}