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: classes.rb
    path of file: ./repos/artichoke/spec-runner/vendor/spec/core/io/fixtures
    
    the code of the file until where you have to start completion: # -*- encoding: utf-8 -*-

module IOSpecs
  class SubIO < IO
  end

  def self.collector
    Proc.new { |x| ScratchPad << x }
  end

  def self.lines
   
    
  def self.lines_r_separator
    [ "Voici la ligne une.\nQui \303\250 la linea due.\n\n\nAqu\303\255 est\303\241 la l\303\255nea tr",
      "es.\nHier",
      " ist Zeile vier",
      ".\n\nEst\303\241 aqui a linha cinco.\nHer",
      "e is line six.\n" ]
  end