You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: index_manager.pb.go
    path of file: ./repos/vald/apis/grpc/v1/manager/index
    
    the code of the file until where you have to start completion: //
// Copyright (C) 2019-2024 vdaas.org vald team <vald@vdaas.org>
//
// Licensed under the Apache License, Version 2.0 
    
func file_v1_manager_index_index_manager_proto_init() {
	if File_v1_manager_index_index_manager_proto != nil {
		return
	}
	type x struct{}
	out := protoimpl.TypeBuilder{
		File: protoimpl.DescBuilder{
			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
			RawDescriptor: file_v1_manager_index_index_manager_proto_rawDesc,
			NumEnums:      0,
			NumMessages:   0,
			NumExtensions: 0,
			NumServices:   1,
		},
		GoTypes:           file_v1_manager_index_index_manager_proto_goTypes,
		DependencyIndexes: file_v1_manager_index_index_manager_proto_depIdxs,
	}.Build()
	File_v1_manager_index_index_manager_proto = out.File
	file_v1_manager_index_index_manager_proto_rawDesc = nil
	file_v1_manager_index_index_manager_proto_goTypes = nil
	file_v1_manager_index_index_manager_proto_depIdxs = nil
}