alt/error_redef2_1alt4_alt1.nit:26,6--7: Redef error: B::f1 is an inherited property. To redefine it, add the redef keyword.
alt/error_redef2_1alt4_alt1.nit:26,12: Redef error: error_redef2_1alt4_alt1#B#f1 redefines error_redef2_1alt4_alt1#A#f1 with 0 parameter(s), 1 expected. Signature is error_redef2_1alt4_alt1#B#f1(i: Int): Int