message.proto

message GoogleMessage2 {
  //        type   name   tag
  //       vvvvvv vvvvvv  vvv
  optional string field1 = 1;
  optional int64 field3 = 3;
  optional int64 field4 = 4;
  optional int64 field30 = 30;
  optional bool field75 = 75 [default = false];
  // Just slightly out of order, 1, 3, 4, 30, 75, 6, 2
  optional string field6 = 6;
  optional bytes field2 = 2;
  // ...
}