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: buf.rb
    path of file: ./repos/homebrew-core/Formula/b
    
    the code of the file until where you have to start completion: class Buf < Formula
  desc "New way of working with Protocol Buffers"
  homepage "https://github.com/bufbuild/buf"
  url "https://github.com/bufbuild/buf/archive/refs/tags/v1.30.0.tar.gz"

    
  def install
    %w[buf protoc-gen-buf-breaking protoc-gen-buf-lint].each do |name|
      system "go", "build", *std_go_args(ldflags: "-s -w", output: bin/name), "./cmd/#{name}"
    end

    generate_completions_from_executable(bin/"buf", "completion")
    man1.mkpath
    system bin/"buf", "manpages", man1
  end