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: base.rb
    path of file: ./repos/vagrant/plugins/provisioners/chef/provisioner
    
    the code of the file until where you have to start completion: # Copyright (c) HashiCorp, Inc.
# SPDX-License-Identifier: BUSL-1.1

require "tempfile"

require_relative "../../../../lib/vagrant/util/presence"
require_relative "../../../../lib/vagrant/util/template_renderer"

require_relative "../installe
    
        def install_chef
          return if !config.install

          @logger.info("Checking for Chef installation...")
          installer = Installer.new(@machine,
            product: config.product,
            channel: config.channel,
            version: config.version,
            omnibus_url: config.omnibus_url,
            force: config.install == :force,
            download_path:  config.installer_download_path
          )
          installer.ensure_installed
        end