instance method session

# File actionpack/lib/action_controller/session_management.rb, line 45
      def session(*args)
        ActiveSupport::Deprecation.warn(
          "Disabling sessions for a single controller has been deprecated. " +
          "Sessions are now lazy loaded. So if you don't access them, " +
          "consider them off. You can still modify the session cookie " +
          "options with request.session_options.", caller)
      end