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: bundled_gem.rb
    path of file: ./repos/ruby/tool/lib
    
    the code of the file until where you have to start completion: require 'fileutils'
require 'rubygems'
require 'rubygems/package'

# This library is used by "make extract-gems" to
# unpack bundled gem files.

module BundledGem
  DEFAULT_G
    
  def dummy_gemspec(gemspec)
    return if File.exist?(gemspec)
    gemdir, gemfile = File.split(gemspec)
    Dir.chdir(gemdir) do
      spec = Gem::Specification.new do |s|
        s.name = gemfile.chomp(".gemspec")
        s.version = File.read("lib/#{s.name}.rb")[/VERSION = "(.+?)"/, 1]
        s.authors = ["DUMMY"]
        s.email = ["dummy@ruby-lang.org"]
        s.files = Dir.glob("{lib,ext}/**/*").select {|f| File.file?(f)}
        s.licenses = ["Ruby"]
        s.description = "DO NOT USE; dummy gemspec only for test"
        s.summary = "(dummy gemspec)"
      end
      File.write(gemfile, spec.to_ruby)
    end
  end