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: rgbds.rb
    path of file: ./repos/homebrew-core/Formula/r
    
    the code of the file until where you have to start completion: class Rgbds < Formula
  desc "Rednex GameBoy Development System"
  homepage "https://rgbds.gbdev.io"
  url "https://github.com/gbdev/rgbds/archive/refs/tags/v0.7.0.tar.gz"
  sha256 "ef04d24d7a79c05ffadac0c08214f59b8d8812c7d1052a585e5ab01
    
  def install
    system "cmake", "-S", ".", "-B", "build", *std_cmake_args
    system "cmake", "--build", "build"
    system "cmake", "--install", "build"
    resource("rgbobj").stage do
      system "cargo", "install", *std_cargo_args
      man1.install "rgbobj.1"
    end
    zsh_completion.install Dir["contrib/zsh_compl/_*"]
    bash_completion.install Dir["contrib/bash_compl/_*"]
  end