# File lib/openid/store/filesystem.rb, line 15
      def initialize(directory)
        @nonce_dir = File.join(directory, 'nonces')
        @association_dir = File.join(directory, 'associations')
        @temp_dir = File.join(directory, 'temp')

        self.ensure_dir(@nonce_dir)
        self.ensure_dir(@association_dir)
        self.ensure_dir(@temp_dir)
      end