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: config.rb
    path of file: ./repos/chef/lib/chef/chef_fs
    
    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 License, Version 2.0 (the "License");
# you may not use this file except in compliance 
    
      def format_path(entry)
        server_path = entry.respond_to?(:display_path) ? entry.display_path : entry.path
        if base_path && server_path[0, base_path.length] == base_path
          if server_path == base_path
            return "."
          elsif server_path[base_path.length, 1] == "/"
            return server_path[base_path.length + 1, server_path.length - base_path.length - 1]
          elsif base_path == "/" && server_path[0, 1] == "/"
            return server_path[1, server_path.length - 1]
          end