# File lib/action_controller/flash.rb, line 141
      def flash #:doc:
        # @session = Hash.new if sessions are disabled
        if @session.is_a?(Hash)
          @__flash ||= FlashHash.new

        # otherwise, @session is a CGI::Session or a TestSession
        else
          @session['flash'] ||= FlashHash.new
        end
      end