/* -*- Mode: protobuf; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 * vim: set ts=8 sts=4 et sw=4 tw=99: */

syntax = "proto2";

message First {
  required Fourth first_field = 1;
}

message Second {
  optional First second_field = 1;
}

message Third {
  required First third_field = 1;
}

message Fourth {
  optional Third fourth_field = 1;
  required Fifth fourth_field_2 = 2;
}

message Fifth {
  required Second fifth_field = 1;
}

message Sixth {
  optional Sixth sixth_field = 1;
}

message Seventh {
  required Eighth seventh_field = 1;
}

message Eighth {
  optional Seventh eighth_field = 1;
}