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: benchmarker.rb
    path of file: ./repos/puppet/benchmarks/hiera_include
    
    the code of the file until where you have to start completion: require 'fileutils'

class Benchmarker
  include FileUtils

  def initialize(target, size)
    @target = target
    @size = size > 100 ? size : 100
  end

  def setup
    require 'puppet'
    @config = File.join(@target, 'puppet.conf')
    Puppet.initialize_settings(['--config', @config])
    envs = Puppet.lookup(:environments)
    @node = Puppet::Node.new('testing', :environment => envs.get('benchmarking'))
  end

  def run(args=nil)
    @compiler = Puppet::Parser::Compiler.new(@node)
    @compiler.compile do |catalog|
      scope = @compiler.topscope
      scope['confdir'] = 'test'
      @size.times do
        100.times do |index|
          hiera_func = @compiler.loaders.puppet_system_loader.load(:function, 'hiera_include')
          
    
  def generate
    env_dir = File.join(@target, 'environments', 'benchmarking')
    manifests_dir = File.join(env_dir, 'manifests')
    dummy_class_manifest = File.join(manifests_dir, 'foo.pp')
    hiera_yaml = File.join(@target, 'hiera.yaml')
    datadir = File.join(@target, 'data')
    common_yaml = File.join(datadir, 'common.yaml')
    groups_yaml = File.join(datadir, 'groups.yaml')

    mkdir_p(env_dir)
    mkdir_p(manifests_dir)
    mkdir_p(datadir)

    File.open(hiera_yaml, 'w') do |f|
      f.puts(<<-YAML)
---
:backends: yaml
:yaml:
   :datadir: #{datadir}
:hierarchy:
   - common
   - groups
:logger: noop
      YAML
    end

    File.open(groups_yaml, 'w') do |f|
      f.puts(<<-YAML)
---
puppet:
  staff:
    groups:
      YAML

      0.upto(50).each do |i|
        f.puts("      group#{i}:")
        0.upto(125).each do |j|
          f.puts("        - user#{j}")
        end
      end
    end

    File.open(dummy_class_manifest, 'w') do |f|
      f.puts("class dummy_class { }")
    end

    File.open(common_yaml, 'w') do |f|
      f.puts(<<-YAML)
        common_entry:
          - dummy_class
      YAML
    end

    templates = File.dirname(File.realpath(__FILE__))

    render(File.join(templates, 'puppet.conf.erb'),
      File.join(@target, 'puppet.conf'),
      :location => @target)
  end