alt/error_needed_method_alt2.nit:47,10--27: Cannot instantiate interface Collection[Int].
alt/error_needed_method_alt2.nit:47,1--40: Error: Method or variable 'iterator' unknown in Collection[Int].
alt/error_needed_method_alt2.nit:47,1--40: Type Error: 'for' expects a type providing 'iterator' method, got 'Collection[Int]'.