included

# File actionpack/lib/action_controller/url_rewriter.rb, line 95
    def self.included(base) #:nodoc:
      ActionController::Routing::Routes.install_helpers(base)
      base.mattr_accessor :default_url_options

      # The default options for urls written by this writer. Typically a <tt>:host</tt> pair is provided.
      base.default_url_options ||= {}
    end