module Docs  class NullStore < AbstractStore    def initialize      super '/'    end     private     def nil(*args)      nil    end     alias_method :read_file, :nil    alias_method :create_file, :nil    alias_method :update_file, :nil    alias_method :delete_file, :nil    alias_method :file_exist?, :nil    alias_method :file_mtime, :nil    alias_method :file_size, :nil    alias_method :list_files, :nil  endend