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: uutils-coreutils.rb
    path of file: ./repos/homebrew-core/Formula/u
    
    the code of the file until where you have to start completion: class UutilsCoreutils < Formula
  desc "Cross-platform Rust rewrite of the GNU coreutils"
  homepage "https://github.com/uutils/coreutils"
  url "https://github.com/uutils/coreutils/archive/refs/
    
  def caveats
    provided_by = "coreutils"
    on_macos do
      provided_by = "macOS"
    end
    <<~EOS
      Commands also provided by #{provided_by} have been installed with the prefix "u".
      If you need to use these commands with their normal names, you
      can add a "uubin" directory to your PATH from your bashrc like:
        PATH="#{opt_libexec}/uubin:$PATH"
    EOS
  end