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: ibooks.rb
    path of file: ./repos/narou/lib/device
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

#
# Copyright 2013 whiteleaf. All rights reserved.
#

module Devic
    
  def get_epubdir_path_in_ibooks_container
    list = Inventory.load("ibooks_epubdir_path_list")
    if list[@toc_url]
      list[@toc_url]
    else
      nil
    end