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: source.rb
    path of file: ./repos/ruby-packer/ruby/lib/bundler
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module Bundler
  class Source
    autoload :Gemspec,  File.expand_path("source/gemspec", __dir__)
    autoload :Git,      File.expand_path("source/git", __dir__)
    autoload :Metadata, File.expand_path("source/metadata", __dir__)
    autoload :Path,     File.expand_path("source/path", __dir__)
    autoload :Rubygems, File.expand_path("source/rubygems", __dir__)

    attr_accessor :dependency_names

    def unmet_deps
      specs.unmet_dependency_names
    end

    def version_message(spec)
      message = "#{spec.name} #{spec.version}"
      message += " (#{spec.platform})" if spec.platform != Gem::Platform::RUBY && !spec.platform.nil?

      if Bundler.locked_gems
        locked_spec = Bundler.locked_gems.specs.find {|s| s.name == spec.name }
        locked_spec_version = locked_spec.version if locked_spec
        if locked_spec_version && spec.version != locked_spec_version

    
    def double_check_for(*); end

    def dependency_names_to_double_check
      specs.dependency_names
    end

    def include?(other)
      other == self
    end

    def inspect
      "#<#{self.class}:0x#{object_id} #{self}>"
    end

    def path?
      instance_of?(Bundler::Source::Path)
    end

    def extension_cache_path(spec)
      return unless Bundler.feature_flag.global_gem_cache?
      return unless source_slug = extension_cache_slug(spec)
      Bundler.user_cache.join(
        "extensions", Gem::Platform.local.to_s, Bundler.ruby_scope,
        source_slug, spec.full_name
      )
    end

  private

    def version_color(spec_version, locked_spec_version)
      if Gem::Version.correct?(spec_version) && Gem::Version.correct?(locked_spec_version)
        # display yellow if there appears to be a regression
        earlier_version?(spec_version, locked_spec_version) ? :yellow : :green
      else
        # default to green if the versions cannot be directly compared
        :green
      end
    end