n:=3;
n.pump(List) //-->L(0,1,2)

n.pump(List,List) //-->L(0,1,2), not expected
  because the second list can be used to describe a calculation
n.pump(List,List(Void,List)) //--> L(L(),L(),L()) all same
   List(Void,List) means returns List, which is a "known" value
n.pump(List,List.fpM("-")) //--> L(L(),L(),L()) all distinct
   fpM is partial application: call List.create()

n.pump(List,(0.0).random.fp(1)) //--> 3 [0,1) randoms
L(0.902645,0.799657,0.0753809)

n.pump(String) //-->"012", default action is id function

class C{ var n; fcn init(x){n=x} }
n.pump(List,C) //--> L(C,C,C)
n.pump(List,C).apply("n") //-->L(0,1,2) ie all classes distinct