Following code compiles fine with Scala 2 but results in error with Scala 3.

  case class ParamLists() {
    def mutipleParamLists()(): Unit = ()
  }

  Surface.methodsOf[ParamLists]

Error is:

missing argument list for method mutipleParamLists in class ParamLists

def mutipleParamLists()(): Unit

  case class ParamListsAB() {
    def mutipleParamLists(a: Int)(b: Int): Unit = ()
  }

  Surface.methodsOf[ParamListsAB]

Errors are:

wrong number of arguments at pickler for (a: Int)(b: Int): Unit: (Main.ParamListsAB#mutipleParamLists : (a: Int)(b: Int): Unit), expected: 1, found: 2

object Tuple2 in package scala does not take parameters