[Go] When define Enum in/not_in in Map, compiler error: undeclared name: _PagingRequest_OrderBy_InLookup

[yrcs]

enum Order { // ascending order ASC = 0; // descending order DESC = 1; }

message PagingRequest { ​ map<string, Order> orderBy = 4 [(validate.rules).map = {ignore_empty: true, keys: {string: {min_len: 1}}, values: {enum: {defined_only: true, in:[0, 1]}}}]; }