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: user_interaction.rb
    path of file: ./repos/powerstation/powerstation/lib/compiled-jruby/lib/ruby/stdlib/rubygems
    
    the code of the file until where you have to start completion: #--
# Copyright 2006 by Chad Fowl
    
  def ask_for_password(question)
    return nil if not tty?

    @outs.print(question, "  ")
    @outs.flush

    password = _gets_noecho
    @outs.puts
    password.chomp! if password
    password
  end