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: dmd.rb
    path of file: ./repos/homebrew-core/Formula/d
    
    the code of the file until where you have to start completion: class Dmd < Formula
  desc "Digital Mars D compiler"
  homepage "https://dlang.org/"
  license "BSL-1.0"

  stable do
    # make sure resources also use the same version
    url "https://github.com/dlang/dmd/archive/refs/tags/v2.107.1.tar.gz"
    sha256 "3552e871d77bea9123ccba72
    
  def install_new_dmd_conf
    conf = etc/"dmd.conf"

    # If the new file differs from conf, etc.install drops it here:
    new_conf = etc/"dmd.conf.default"
    # Else, we're already using the latest version:
    return unless new_conf.exist?

    backup = etc/"dmd.conf.old"
    opoo "An old dmd.conf was found and will be moved to #{backup}."
    mv conf, backup
    mv new_conf, conf
  end