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: volume_durability_none.go
    path of file: ./repos/heketi/apps/glusterfs
    
    the code of the file until where you have to start completion: //
// Copyright (c) 2015 The heketi Authors
//
// This file is licensed to 
    
func init() {
	// Volume Entry has VolumeDurability interface as a member.
	// Serialization tools need to know the types that satisfy this
	// interface. gob is used to serialize entries for db. Strictly
	// speaking, it is not required to store VolumeDurability member in db
	// as it can be recreated from volumeInfo. But removing it now would
	// break backward with db.
	gob.Register(&NoneDurability{})
}