syntax = "proto3"; package protos.no_std; enum MyEnum { Val0 = 0; Val1 = 1; } message EmbeddedMessage { int32 val = 1; MyEnum e = 2; } message NoStdMessage { fixed32 num = 1; repeated fixed32 nums = 2; EmbeddedMessage message = 3; repeated EmbeddedMessage messages = 4; }