alt/error_redef_1alt2_alt4.nit:29,18: Redef error: error_redef_1alt2_alt4#B#f1 redefines error_redef_1alt2_alt4#A#f1 with 0 parameter(s), 1 expected. Signature is error_redef_1alt2_alt4#B#f1(i: Int)