|  | // Copyright 2019 The Go Authors. All rights reserved. | 
|  | // Use of this source code is governed by a BSD-style | 
|  | // license that can be found in the LICENSE file. | 
|  |  | 
|  | syntax = "proto2"; | 
|  |  | 
|  | package go_annotation; | 
|  |  | 
|  | import "google/protobuf/descriptor.proto"; | 
|  |  | 
|  | option go_package = "google.golang.org/protobuf/internal/testprotos/annotation"; | 
|  |  | 
|  | extend google.protobuf.MessageOptions { | 
|  | // Setting this on a message enables tracking of which fields in the message | 
|  | // a specific binary might access. As a consequence, it also disables the use | 
|  | // of the message accessor methods to satisfy interfaces: they can only be | 
|  | // called directly. | 
|  | optional bool track_field_use = 37383685; | 
|  | } |