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: versioned_cookbook_dir.rb
    path of file: ./repos/chef/lib/chef/chef_fs/file_system/chef_server
    
    the code of the file until where you have to start completion: #
# Author:: John Keiser (<jkeiser@chef.io>)
# Copyright:: Copyright (c) Chef Software Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache Licen
    
          def initialize(name, parent, options = {})
            super(name, parent)
            # If the name is apache2-1.0.0 and versioned_cookbooks is on, we know
            # the actual cookbook_name and version.
            if name =~ VALID_VERSIONED_COOKBOOK_NAME
              @cookbook_name = $1
              @version = $2
            else
              @exists = false
            end