Cannot generate stub from .proto

[n04ln]

Hi,

When I'm trying to use https://github.com/mwitkow/go-proto-validators, I got a bug.

put simply, look at following protofile.

syntax = "proto3";
package pkgname;

message A{
    B b = 1;
    message B {
        string c = 2;
    }
}

And try compile using protoc with retool,

$ retool do protoc --proto_path=${GOPATH}/src:. --twirp_out=. --twirp_dart_out=package_name=pkgname:./dart_client --go_out=. ./rpc/protobuf/service.proto

I got this code,

import 'dart:convert';
class A {

	A(
	this.b,);

    B b;
    
	
	factory A.fromJson(Map<String,dynamic> json) {
		

		return new A(
		new B.fromJson(json),
		
		);	
	}

	Map<String,dynamic>toJson() {
		var map = new Map<String, dynamic>();
		map['b'] = b.toJson();
		return map;
	}

  @override
  String toString() {
    return json.encode(toJson());
  }
}

It seems, not define message B in message A.

Thanks.