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

module Bundler
  # Manages which plugins are installed and their sources. This also is supposed to map
  # which plugin does what (currently the features are not implemented so this class is
  # now a stub class).
  module Plugi
    
      def load_index(index_file, global = false)
        SharedHelpers.filesystem_access(index_file, :read) do |index_f|
          valid_file = index_f && index_f.exist? && !index_f.size.zero?
          break unless valid_file

          data = index_f.read

          require_relative "../yaml_serializer"
          index = YAMLSerializer.load(data)

          @commands.merge!(index["commands"])
          @hooks.merge!(index["hooks"])
          @load_paths.merge!(index["load_paths"])
          @plugin_paths.merge!(index["plugin_paths"])
          @sources.merge!(index["sources"]) unless global
        end
      end