```scala val ssss = new AnyStepper[Int] { override def trySplit(): AnyStepper[Int] = null override def hasStep: Boolean = false override def nextStep(): Int = ??? override def estimateSize: Long = Long.MaxValue override def characteristics: Int = 0 } ssss.asJavaSeqStream.count() ``` ``` java.lang.ClassCastException: scala.jdk.StreamConvertersTypingTest$$anon$1 cannot be cast to scala.collection.IntStepper ```