-alt/error_needed_method_alt2.nit:47,10--27: Cannot instantiate interface Collection[Int].
-alt/error_needed_method_alt2.nit:47,1--40: Type Error: Expected method 'iterator' in type Collection[Int]
+alt/error_needed_method_alt2.nit:47,10--27: Type Error: Cannot instantiate interface Collection[Int].