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: indexes.rb
    path of file: ./repos/artichoke/artichoke-backend/vendor/ruby/spec/bundler/support
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module Spec
  module Indexes
    def dep(name, reqs = nil)
      @deps ||= []
      @deps << Bundler::Dependency.new(name, reqs)
    end

    def platform(*args)
      @platforms ||= []
      @platforms.concat args.map {|p| Gem::Platform.new(p) }
    end

    alias_method :platforms, :platform

    def resolve(args = [])
      @platforms ||= ["ruby"]
      deps = []
      default_source = instance_double("Bundler::Source::Rubygems", :specs => @index, :to_s => "locally install gems")
      source_requirements = { :default => default_source }
      @deps.each do |d|
        source_requirements[d.name] = d.source = default_source
        @platforms.each do |p|
          deps << Bundler::DepProxy.get_proxy(d, p)
        end
      end
      args[0] ||= [] # base
      args[1] ||= Bundler::GemVersionPromoter.new # gem_version_promoter
      args[2] ||= [] # additional_base_requirements
      args[3] ||= @platforms # platforms
      Bundler::Resolver.resolve(deps, source_requirements, *args)
    end

    def should_resolve_as(specs)
      got = resolve
      got = got.map(&:full_name).sort
      expect(got).to eq(specs.sort)
    end

    def should_resolve_and_include(specs, args = [])
      got = resolve(args)
      got = got.map(&:full_name).sort
      specs.each do |s|
        expect(got).to include(s)
      end
    end

    def should_conflict_on(names)
      got = resolve
      raise "The resolve succeeded with: #{got.map(&:full_name).sort.inspect}"
    rescue Bundler::VersionConflict => e
      expect(Array(names).sort).to eq(e.conflicts.sort)
    end

    def gem(*args, &blk)
      build_spec(*args, &blk).first
    end

    def locked(*args)
      Bundler::SpecSet.new(args.map do |name, version|
        gem(name, version)
      end)
    end

    def should_conservative_resolve_and_include(opts, unlock, specs)
      # empty unlock means unlock all
      opts = Array(opts)
      search = Bundler::GemVersionPromoter.new(@locked, unlock).tap do |s|
        s.level = opts.first
        s.strict = opts.include?(:strict)
        s.prerelease_specified = Hash[@deps.map {|d| [d.name, d.requirement.prerelease?] }]
      end
      should_resolve_and_include specs, [@base, search]
    end

    def an_awesome_index
      build_index do
        gem "rack", %w[0.8 0.9 0.9.1 0.9.2 1.0 1.1]
        gem "rack-mount", %w[0.4 0.5 0.5.1 0.5.2 0.6]

        # --- Pre-release support
        gem "RubyGems\0", ["1.3.2"]

        # --- Rails
        versions "1.2.3 2.2.3 2.3.5 3.0.0.beta 3.0.0.beta1" do |version|
          gem "activesupport", version
          gem "actionpack", version do
            dep "activesupport", version
            if version >= v("3.0.0.beta")
              dep "rack", "~> 1.1"
              dep "rack-mount", ">= 0.5"
            elsif version > v("2.3")   then dep "rack", "~> 1.0.0"
            elsif version > v("2.0.0") then dep "rack", "~> 0.9.0"
            end
          
    
    def locked(*args)
      Bundler::SpecSet.new(args.map do |name, version|
        gem(name, version)
      end)
    end

    def should_conservative_resolve_and_include(opts, unlock, specs)
      # empty unlock means unlock all
      opts = Array(opts)
      search = Bundler::GemVersionPromoter.new(@locked, unlock).tap do |s|
        s.level = opts.first
        s.strict = opts.include?(:strict)
        s.prerelease_specified = Hash[@deps.map {|d| [d.name, d.requirement.prerelease?] }]
      end
      should_resolve_and_include specs, [@base, search]
    end

    def an_awesome_index
      build_index do
        gem "rack", %w[0.8 0.9 0.9.1 0.9.2 1.0 1.1]
        gem "rack-mount", %w[0.4 0.5 0.5.1 0.5.2 0.6]

        # --- Pre-release support
        gem "RubyGems\0", ["1.3.2"]

        # --- Rails
        versions "1.2.3 2.2.3 2.3.5 3.0.0.beta 3.0.0.beta1" do |version|
          gem "activesupport", version
          gem "actionpack", version do
            dep "activesupport", version
            if version >= v("3.0.0.beta")
              dep "rack", "~> 1.1"
              dep "rack-mount", ">= 0.5"
            elsif version > v("2.3")   then dep "rack", "~> 1.0.0"
            elsif version > v("2.0.0") then dep "rack", "~> 0.9.0"
            end
          end
          gem "activerecord", version do
            dep "activesupport", version
            dep "arel", ">= 0.2" if version >= v("3.0.0.beta")
          end
          gem "actionmailer", version do
            dep "activesupport", version
            dep "actionmailer",  version
          end
          if version < v("3.0.0.beta")
            gem "railties", version do
              dep "activerecord",  version
              dep "actionpack",    version
              dep "actionmailer",  version
              dep "activesupport", version
            end
          else
            gem "railties", version
            gem "rails", version do
              dep "activerecord",  version
              dep "actionpack",    version
              dep "actionmailer",  version
              dep "activesupport", version
              dep "railties",      version
            end
          end
        end

        versions "1.0 1.2 1.2.1 1.2.2 1.3 1.3.0.1 1.3.5 1.4.0 1.4.2 1.4.2.1" do |version|
          platforms "ruby java mswin32 mingw32 x64-mingw32" do |platform|
            next if version == v("1.4.2.1") && platform != pl("x86-mswin32")
            next if version == v("1.4.2") && platform == pl("x86-mswin32")
            gem "nokogiri", version, platform do
              dep "weakling", ">= 0.0.3" if platform =~ pl("java")
            end
          end
        end

        versions "0.0.1 0.0.2 0.0.3" do |version|
          gem "weakling", version
        end

        # --- Rails related
        versions "1.2.3 2.2.3 2.3.5" do |version|
          gem "activemerchant", version do
            dep "activesupport", ">= #{version}"
          end
        end

        gem "reform", ["1.0.0"] do
          dep "activesupport", ">= 1.0.0.beta1"
        end

        gem "need-pre", ["1.0.0"] do
          dep "activesupport", "~> 3.0.0.beta1"
        end
      end