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: berkeley-db@5.rb
    path of file: ./repos/homebrew-core/Formula/b
    
    the code of the file until where you have to start completion: class BerkeleyDbAT5 < Formula
  desc "High performance key/value database"
  homepage "https://www.oracle.com/database/technologies/related/berkeleydb.html"
  url "https://download.oracle.com/berkeley-db/db-5.3.28.tar.gz"
  
    
  def install
    # BerkeleyDB dislikes parallel builds
    ENV.deparallelize

    # Fix compile with newer Clang
    ENV.append_to_cflags "-Wno-implicit-function-declaration" if DevelopmentTools.clang_build_version >= 1200

    # Work around ancient config files not recognizing aarch64 linux
    # configure: error: cannot guess build type; you must specify one
    if OS.linux? && Hardware::CPU.arm?
      resource("automake").stage do
        (buildpath/"dist").install "lib/config.guess", "lib/config.sub"
      end
    end