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: pathname.rb
    path of file: ./repos/natalie/lib
    
    the code of the file until where you have to start completion: class Pathname
  TO_PATH = :to_path
  SEPARATOR_PATH = Regexp.new(File::SEPARA
    
  def initialize(value)
    if value.is_a?(Pathname)
      @path = value.path
      return
    elsif value.respond_to?(:to_path)
      value = value.to_path
    end