included

# File actionpack/lib/action_controller/caching/pages.rb, line 37
      def self.included(base) #:nodoc:
        base.extend(ClassMethods)
        base.class_eval do
          @@page_cache_directory = defined?(Rails.public_path) ? Rails.public_path : ""
          ##
          # :singleton-method:
          # The cache directory should be the document root for the web server and is set using <tt>Base.page_cache_directory = "/document/root"</tt>.
          # For Rails, this directory has already been set to Rails.public_path (which is usually set to <tt>RAILS_ROOT + "/public"</tt>). Changing
          # this setting can be useful to avoid naming conflicts with files in <tt>public/</tt>, but doing so will likely require configuring your
          # web server to look in the new location for cached files.
          cattr_accessor :page_cache_directory

          @@page_cache_extension = '.html'
          ##
          # :singleton-method:
          # Most Rails requests do not have an extension, such as <tt>/weblog/new</tt>. In these cases, the page caching mechanism will add one in
          # order to make it easy for the cached files to be picked up properly by the web server. By default, this cache extension is <tt>.html</tt>.
          # If you want something else, like <tt>.php</tt> or <tt>.shtml</tt>, just set Base.page_cache_extension. In cases where a request already has an
          # extension, such as <tt>.xml</tt> or <tt>.rss</tt>, page caching will not add an extension. This allows it to work well with RESTful apps.
          cattr_accessor :page_cache_extension
        end
      end