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: mirror.rb
    path of file: ./repos/brew/Library/Homebrew/dev-cmd
    
    the code of the file until where you have to start completion: #: @hide_from_man_
    
  def mirror_args
    Homebrew::CLI::Parser.new do
      usage_banner <<~EOS
        `mirror` <formulae>

        Reuploads the stable URL for a formula to Bintray to use it as a mirror.
      EOS
      switch :verbose
      switch :debug
    end
  end